1

Neon Museum - Las Vegas, Nevada

Image: 李林Alwen

Let’s kick off this list with the Neon Museum in Las Vegas. The location seems just about right since Las Vegas is always bright and shining with luminous signs.

This museum, founded in 1996, holds a collection of over 250 historic signs from the city. It is located a few blocks away from the iconic Las Vegas Strip and exhibitions and projections display signs that once adorned the venue. Moreover, you will be able to see some paradigmatic signs restored like the Silver Slipper and Benny Binion’s Horseshoe.

2

International Spy Museum - Washington, D.C.

Image: Marten Newhall

Haven’t we all dreamed of becoming an international secret spy? Well, you can make your dream come true, at least for a few hours, at the International Spy Museum in Washington.

This museum was established in 2002 and it features the largest collection of international espionage artifacts ever displayed. From spy gadgets and concealed weapons to covert operations and famous espionage cases, you’ll get inside the life of a true spy.

Furthermore, it is an interactive museum so visitors can test their own skills with the experiences offered within the establishment.

3

National Mustard Museum - Middleton, Wisconsin

Image: Simona Sergi

Mustard is so much more than just a condiment, and if you think it is not, the National Mustard Museum is here to challenge that notion.

Founded in 1992 by Barry Levenson, this quirky museum celebrates all things mustard with the world’s largest collection of mustards and mustard memorabilia. It showcases over 6000 mustards from over 70 countries and visitors can learn about the mustard history and take a look at antique elements like tins, mustard pots, vintage signs, and advertisements.

If you are a foodie or a culinary curious, you can’t miss this museum!

4

Idaho Potato Museum - Blackfoot, Idaho

Image: Lars Blankers

Idaho’s love and pride for potatoes is so big, that they had to build a museum to display it and they are waiting for you!

The Idaho Potato Museum is a spud-tacular tribute to the beloved potato, fittingly located in the "potato capital of the world." Housed in the former Oregon Short Line Railroad Depot, this space of over 5,500 square feet offers exhibits on the history, cultivation, and nutritional value of the humble tuber.

Highlights include one of the world’s largest collections of potato mashers and the biggest potato crips ever made. Visitors can even perform experiments in the Potato Lab and savor a freshly baked potato in the museum’s cafe.

5

International UFO Museum and Research Center - Roswell, New Mexico

Image: Danie Franco

UFOs have always raised curiosity and the theories behind sightings and paranormal activities are one too many, right? Or at least enough to create a museum devoted to exhibiting all things UFOs.

The International UFO Museum and Research Center offers an intriguing exploration into the world of UFOs, and it is housed in a former movie theater. The creation of the museum was inspired by the Rosewell incident in 1947, a crash of a flying saucer, and it presents a variety of written, audio, and visual materials.

This museum is pet friendly and visitors can enjoy exhibits like a spinning UFO with aliens and an outdoor "Rosewell Belevies" mural. When are you paying a visit?

6

National Museum of Funeral History - Houston, Texas

Image: panyawat auitpol

There’s no denying it, we are going to die eventually. However, is death enough of an intriguing topic to open a museum devoted to it? Apparently, it is, and you can find one in Houston.

The National Museum of Funeral History houses the country’s largest collection of funeral service items, including caskets, coffins, and hearses.

The museum is over 30,000 feet and it features 19 permanent exhibits covering topics that range from embalming to the history of cremation and mourning photography. To make it even more interesting, the museum offers a unique look at funeral traditions and culture from ancient Egypt to modern times around the world.

7

Museum of Bad Art - Somerville, Massachusetts

Image: Rainer Bleek

Even if art is not for everyone, we can all agree there are standards for what is considered good or bad, right? Well, The Museum of Bad Art is here to prove us wrong!

Located in Somerville, the Museum of Bad Art is a delightful celebration of artistic mishaps and quirky creativity. What began in 1993 in a Boston basement has now expanded to the Somerville Theater’s basement in Davis Square.

This unique museum boasts over 700 pieces from artists, amateurs, and anonymous creators, featuring donations, thrift store finds, and gifts from the artists themselves. Despite its impressive collection, only about 25 works are displayed at a time , ensuring a fresh experience with each visit. Best of all, it’s free! For a fun and offbeat adventure, this is the place you need to visit!

8

National Bottle Museum - Ballston Spa, New York

Image: James Cousins

Here’s a museum you never thought would exist! But considering bottles are part of our everyday life, have you ever stopped and thought about how bottles are made? Wonder no more, better visit the museum!

The National Bottle Museum is a charming three-story brick building and it showcases over 3,000 bottles on its first floor alone! With seven permanent exhibits, you can marvel at pre-machine-made bottles from every state and even see glowing uranium glass!

Don’t miss the quirky temporary exhibits that go from Coca-Cola bottles to shot glasses, and spa bottles! And, if you are a bottle collector yourself, you’ll love the extensive library available!

9

Sindecuse Museum of Dentistry - Ann Arbor, Michigan

Image: Jonathan Borba

Teeth are the subject of contrarian opinions! Some love it, some find it disgusting. But that wasn’t enough of a reason to prevent Michigan from having a museum devoted to dentistry.

The Sindecuse Museum of Dentistry in Ann Arbor is a hidden gem tucked away in the atrium of the University of Michigan School of Dentistry. It’s one of the few museums in the world dedicated entirely to dentistry!

With over 25,000 objects on display, you will find everything from antique dental tools to quirky historical products dating back to the 18th century. The museum also features fascinating temporary exhibits and engaging programs. Plus, admission is free, so you can enjoy this unique journey through dental history without spending a dime.

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Museum of Jurassic Technology - Los Angeles, California

Image: Mauro Sbicego

You read that right, the words "Jurassic" and "technology" are part of the same name and they have nothing to do with Spielberg’s millionaire production.

The Museum of Jurassic Technology in Los Angeles is an enigma wrapped in a mystery. Despite its name, there’s nothing particularly Jurassic about it. Instead, this delightfully bizarre museum leads you through dimly lit halls filled with curiosities, from mini models of Napoleon and Daffy Duck to oil portraits of Soviet space dogs.

It’s a wonderfully chaotic mix that keeps visitors scratching their heads and smiling. Perfect for those who love a good mystery, the museum’s quirky collection is as baffling as it is fascinating. Come ready to be amused and bewildered!

1

Seattle Underground City

Did you know the remnants of Seattle's original streets are still accessible? Beneath the bustling streets of modern-day Seattle lies the Underground City , a network of subterranean passageways that formed the ground level in the 1800s.

By the end of the 19th century, after the Great Seattle Fire, it was decided to rebuild the city at a higher elevation to combat frequent flooding . So, these original streets, sidewalks, and storefronts were buried, and with it, much of their history.

Guided tours take people through tunnels and ladders and retell real and eerie stories about the history of the Underground City.

2

Luray Caverns

Image: Robert Thiemann

Have you ever heard of the underground Stalacpipe Organ ? Not only is it a one-of-a-kind interaction between keyboards and cavern stalactites, but it is also the largest musical instrument in the world, according to Guinness World Records.

This instrument lives in the Luray Caverns, Virginia. It consists of an electric console that taps on these ancient stalactites of varying sizes to produce musical tones. A subterranean wonder, these caverns are also known for their extraordinary size , housing towering stalactites and stalagmites, mirrored pools, and delicate drapery-like calcite formations.

3

The Underground Gardens of Baldassare Forestiere

Image: Adrian Botica

This stunning subterranean retreat was built entirely by hand. Tucked under the sun-scorched landscape of Fresno, California, lie the Underground Gardens of Baldassare Forestiere . They are the life’s work of Baldassare Forestiere, a Sicilian immigrant who started digging in the early 1900s to escape the Central Valley's oppressive heat.

Over 40 years, drawing inspiration from ancient Roman catacombs , Forestiere carved an elaborate network of underground rooms, passageways, grottoes, and courtyards that span 10 acres.

A unique masterpiece, the gardens are open with guided tours that lead guests through beautifully designed spaces featuring skylights, arches, and alcoves. This oasis also boasts an array of fruit trees, including citrus, figs, and olives.

4

Ruby Falls

Image: Goodfreephotos_com

Colorful and breathtaking, the Ruby Falls is a geological wonder located inside Lookout Mountain near Chattanooga, Tennessee.

Hidden over 1,000 feet below the mountain's surface, this waterfall cascades 145 feet into a pool , making it one of the tallest underground waterfalls open to the public.

Visitors enter the mountain and descend via elevator. Then, they walk through stunning cave formations such as stalactites, stalagmites, and flowstone. At the waterfall chamber, multicolored lights –powered by renewable energy– illuminate the falls. Lantern-lit tours are also offered as a chance to visit the marvel with a different charm.

5

The Catacombs of Green-Wood Cemetery

Image: Joy Ernst

Arched tunnels of tranquil, sacred vaults lie beneath the Green-Wood Cemetery in Brooklyn, New York. Built in the mid-19th century, these catacombs were designed as a prestigious resting place for the city’s elite , prominent families.

While the catacombs are typically closed to the public, special events are sometimes organized to welcome visitors, such as art expositions, guided history tours, and candlelit tours seasoned with live music and storytelling.

Outside, where the sun does reach, await the serene landscapes and remarkable monuments of the cemetery, which is itself a National Historic Landmark .

6

The Lost Sea

Image: Roberto Nickson

The largest underground lake in America is in Tennessee. Hidden within the Craighead Caverns in Sweetwater, this enormous body of water lies in a cave system filled with fascinating formations, such as stalactites, stalagmites, and rare anthodites, also known as "cave flowers."

A National Natural Landmark, this lake marvels scientists, who are yet unaware of the exact extension of its waters. Those who visit can embark on a boat ride called "The Lost Sea Adventure," first walking inside the cavern before reaching a boat to navigate these ethereal sights.

7

Mammoth Cave National Park

Image: Sherin Jacob

The Mammoth Cave National Park is home to the longest cave system in the world . Located in central Kentucky, it extends over 420 miles of explored passages and many more likely undiscovered. Enormous chambers, underground rivers, a labyrinth of tunnels, and gypsum crystal formations can all be found at this site.

The park has been declared a UNESCO World Heritage Site and an International Biosphere Reserve. It also includes over 52,000 acres of protected land on the surface, renowned for its lush forests and diverse wildlife.

8

Carlsbad Caverns National Park

Image: Cason Asher

A large bat colony lives in the Carlsbad Caverns National Park in New Mexico, but that’s not its only charm. The park boasts over 100 caves, with its centerpiece being the immense Carlsbad Cavern.

The cavern includes the Big Room, one of the largest underground chambers in North America, spanning 8.2 acres. Visitors can descend via an emblematic natural entrance or by elevator, dropping 750 feet underground. Stalactite formations like the Giant Dome, the Hall of the White Giant, and the Chandelier are some of the caves' breathtaking highlights.

9

Indian Echo Caverns

Image: Magda Ehlers

The Indian Echo Caverns, which have been open to the public since the early 1920s, are carved into the limestone of the Appalachian Mountains. Located near Hummelstown, Pennsylvania, this site gets its name from the echoes heard within the cavern’s chambers , which were once believed to be mystical by Native American people in the area.

Unique, immersive sections of the caverns have names like the "Crystal Palace," the "Echo Room," and the "Wedding Room," where, yes, real weddings are sometimes held!

10

Wind Cave National Park

Image: Francesco Ungaro

Wind Cave National Park, located in the Black Hills of South Dakota, is one of the world’s largest caves, but that’s not what it’s most famous for. One signature sight here is the boxwork formation , a rare lattice-like pattern formed by calcite deposits.

The cave system stretches for over 140 miles, though much of it remains unexplored. Popular tours take guests through captivating features like the "Ribbon Room" and the "Crystal Palace."

Why is Wind Cave called that? Mainly due to the "wind" phenomenon that occurs at its entrance. The cave's air pressure causes the entrance to draw in or expel air, depending on atmospheric conditions.

1

The sweet tooth

Image: Michelle Tsang

What's your favorite ice cream flavor? With so many options available today, it's hard to choose just one, right? Like us, Thomas Jefferson also loved ice cream. Not only that, he's often credited with making this treat famous in America.

The third US president discovered his sweet tooth during his time in France. It's impossible not to imagine Jefferson doing important paperwork with a bowl of ice cream on his desk. In addition, it's said that he often served the sweet dessert to his guests at the White House.

And that’s not all! A recipe for vanilla ice cream, handwritten by Jefferson himself, is still kept to this day in the Library of Congress.

2

The handshaker

Image: Erika Fletcher

It seems that Jefferson was a man who set trends and influenced fashions. Ice cream wasn’t the only custom that spread across the country thanks to him.

Today, the handshake is a very common and popular form of greeting. But this was not always the case. Before Jefferson's presidency, handshakes were less frequent, and people often used other formal greetings, such as bowing.

Jefferson argued that handshakes were horizontal and, therefore, more democratic. This belief illustrates how he integrated his principles into every aspect of his life, even small habits and customs.

3

The friend

Image: Joanna Kosinska

Thomas Jefferson and John Adams first met in 1775 at the Continental Congress in Philadelphia. Despite their differences, they liked and respected each other. Together, they were part of the committee that drafted the Declaration of Independence in 1776 and became even closer when they both served as diplomats in Europe during the 1780s. Jefferson later served as vice president to his friend Adams when the latter took office in 1797. Although they drifted apart after Adams' presidency, they reconciled in 1812, and their regular letters returned.

As if all this weren’t enough, they both died on the same day. And not just any day—both passed away on July 4, 1826, the 50th anniversary of the Declaration of Independence.

4

The polyglot

Image: Thomas Kelley

Can you speak more than one language? It's hard not to be impressed when you see a bilingual person developing their skills, right? And then there are those who speak three or four languages!

In this regard, Jefferson’s case is remarkable. The third president of our country was fluent in no less than six languages! In addition to his mother tongue, English, and the widely spoken French (which he used during his time as American minister to France in the 1780s), Jefferson also had strong skills in Latin, Ancient Greek, Italian, and Spanish. Furthermore, some sources suggest he also knew some German. A true polyglot!

5

The musician

Image: Baher Khairy

During his childhood in Virginia, Thomas Jefferson developed a strong interest in and passion for music. Music was a fundamental element in his home, and this art form was also a main part of his education.

The Father of the Declaration of Independence played the violin perfectly. His father, Peter Jefferson, taught him to play this instrument when Thomas was very young, and his talent only grew over the years.

Less frequently than the violin, Jefferson also played the cello—another stringed instrument known for its sophistication.

6

The architect

Image: Richard Hedrick

Jefferson's talents were even more varied! He was not only a polyglot and a musician but also an accomplished architect.

Thomas Jefferson played a major role in the design and construction of his plantation home in Virginia, the magnificent Monticello, which would later earn him one of his famous nicknames. Inspired by classical and Renaissance architecture, Monticello is considered one of the greatest works of American architecture. To add further merit to his work, Jefferson began the design of the plantation and its house in 1768, when he was only 25 years old!

Fun fact: Today, Monticello is a UNESCO World Heritage Site.

7

The family man

Image: Heike Mintel

If you're a family person, you'll love this aspect of Thomas Jefferson.

In addition to politics, business, and his many talents, Thomas Jefferson was also a devoted family man—and, we must say, he had quite a large family. But how big was his family? Jefferson was born to Peter Jefferson and Jane Randolph Jefferson and was the third of ten siblings.

In 1772, he married Martha Wayles Skelton, with whom he had six children. However, only two daughters survived to adulthood: Martha and Mary, who also gave him many grandchildren.

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The farmer

Image: Stephen Radford

Agriculture was central to Jefferson's vision at the national policy level and also in his personal life.

Monticello was not only his home but also a 5,000-acre plantation where he experimented with different crops, including wheat, corn, tobacco, and various vegetables and fruits.

In addition, he was also an enthusiast of flower gardens. His interest in horticulture led him to import seeds and plants from around the world to experiment with in America!

9

The pet lover

Image: Dawn McDonald

Among his many qualities, his appreciation for animals truly stood out.

At Monticello, he had a variety of farm animals, including geese, turkeys, chickens, horses, cows, and pigs, all of which played an important role in maintaining the plantation. But his true love was for horses. He loved riding and spending time with them, both at his home in Virginia and even during his presidency.

It’s also said that he had a soft spot for birds. One of his most beloved pets was a mockingbird named Dick, who, according to historians, was allowed to fly around the house. Cute, isn't it?

10

The astronomer

Image: Matthew Ansley

Jefferson's interests and passions were not limited to earthly matters. In fact, he was an amateur astronomer. The stars and the cosmos sparked a deep curiosity in him.

In line with this interest, he developed a taste for telescopes, through which he could approach that mysterious object of study. He had several telescopes in his house and would spend hours and hours observing the night sky.

This inclination played a key role in the famous Lewis and Clark Expedition (1804-1806), as it’s believed that Jefferson provided precise astronomical guidance and instructions to the two explorers.