1

A mountaintop with a maintenance plan

Image: Sebastian Enriqu

Each year, around two million visitors make their way to see the monument. But keeping the presidential faces looking sharp takes serious work. Park Service staff actually rappel down the mountain to inspect for cracks. They use silicone sealant to block out moisture and keep the granite from breaking apart in the cold. This isn’t a quick job, it’s a regular, careful operation. The mountain's top sits 5,725 feet above sea level, so it’s not for the faint of heart.

2

One historian’s tourism dream

Image: Engin Yapici

Back in 1923, South Dakota historian Doane Robinson had an idea to attract visitors to the Black Hills. Now, what was his original plan? Carve Western legends like Buffalo Bill and Native American leaders into the rock. The vision then shifted to feature US presidents for broader national appeal.

President Calvin Coolidge helped land the funding, even during tough economic times. The carving began in 1927 and stretched on until 1941. Sculptor Gutzon Borglum died before finishing, and his son Lincoln carried the torch to completion.

3

Four presidents, four chapters

Image: Jeromey Balderrama

Each face on the mountain stands for a key period in our nation’s story. Can you imagine what they are?

Washington symbolizes the birth of the country, while Jefferson represents growth and expansion. Lincoln stands for unity and the preservation of the nation during the Civil War. Roosevelt brought development and the rise of the US on the world stage. Together, they tell a chronological story in stone. The idea was to highlight leadership through the ages, not just popular figures.

4

A presidential switch

Image: Andrew Ling

Originally, Thomas Jefferson was supposed to be on Washington’s left. But during the carving, the rock proved too unstable. So they scrapped the partially finished face and started over, this time on the right side.

It was a major do-over that cost time and money, a lot of it! But ultimately, it worked out for the best, structurally speaking. Today, most visitors never realize Jefferson had a false start.

5

Dynamite and a dream

Image: Takefreebies

It’s easy to forget that Mount Rushmore wasn’t sculpted with tiny chisels: It was blasted into shape. Most of the work was done with dynamite, followed by finer detailing with jackhammers and drills.

From 1927 to 1941, about 400 workers shaped the mountain. Amazingly, no lives were lost during the entire project. Many of the workers were former miners, used to rough terrain and heavy tools. It wasn’t easy, but it was efficient.

6

The presidents were supposed to have torsos

Image: Thomas Fields

The original vision for the monument wasn’t just heads, it included bodies from the waist up! Imagine that! Like many grand ideas, it ran into budget troubles. Funding dried up, and with time running out, the project was scaled back.

What we see today is actually an unfinished version of Borglum’s full plan. Still, the heads alone have become iconic. Imagine how much more impressive it would’ve been with shoulders and coats.

7

Secrets behind Lincoln’s head

Image: Rosanne Rapata

There’s a hidden room carved into the mountain, did you know that? Called the Hall of Records, it was Borglum’s idea to store important American documents and artifacts.

While the grand plans for a museum inside the mountain were never fully realized, a titanium vault was placed there. It contains copies of key US documents, including the Constitution and the Declaration of Independence. Located behind Lincoln’s head, it’s not open to the public. Still, it adds an air of mystery to the site. It makes you wanna visit, right?

8

Step off the beaten path

Image: Nils Huenerfuerst

Most visitors snap their photos from the Grand View Terrace, and it’s lovely. But for those willing to take a short walk, the President’s Trail offers even better views.

This loop takes you closer to the monument and into nature. You might spot local wildlife like mountain goats or deer along the way. The trail includes about 422 stairs, so make sure you’re wearing comfy shoes. It’s a quieter, more personal way to experience the monument.

9

Entablature

Image: Tommy Bond

Gutzon Borglum didn’t just want Mount Rushmore to be a visual tribute, he wanted it to tell the story of America, too. His idea was to chisel a brief summary history, covering events from 1776 to 1906, right into the rock face.

This massive engraving, called "Entablature," was to be etched into an 80-by-120-foot depiction of the Louisiana Purchase. President Calvin Coolidge even agreed to write it, but when Borglum edited Coolidge’s draft without permission, the president was so annoyed he refused to try again. Despite the grand vision, the project was eventually scrapped, partly because the lettering wouldn’t have been visible from a distance, and partly because the budget ran dry.

10

Don’t expect a fifth face anytime soon

Image: Ronda Darby

Over the years, people have suggested adding more figures to the mountain. Names like Susan B. Anthony, FDR, JFK, Reagan, Obama, and Trump have all come up. But the National Park Service has said a firm "no." Structurally, there’s just no safe place to add another carving. Plus, the monument is considered complete in its message. So, while the debate pops up now and then, don’t hold your breath. The original four are here to stay.

1

Gutenberg Bible

The Gutenberg Bible was the first book to be printed after the invention of movable type printing, around the year 1455. Nowadays, only 49 copies have survived from the 180 believed to have been printed by Gutenberg himself , and only 21 are considered complete copies. The copy kept in the Library of Congress is one of three complete copies printed in vellum —a parchment made from animal skin.

2

Draft of the Declaration of Independence

The Declaration of Independence kept at the National Archives in Washington, D.C, is the final document presented to the Second Continental Congress. Before that, six drafts were made. The copy kept in the Library of Congress is the first ‘rough draft’ written by Thomas Jefferson , with notes from Benjamin Franklin, John Adams, and the other committee delegates. It was part of Jefferson’s personal library and papers, which were acquired by the Library of Congress in 1815.

3

Waldseemüller Map

The only surviving copy, this 1507 map by Martin Waldseemüller was an ambitious project that aimed to depict the geographical discoveries of the past few decades , including those made by Amerigo Vespucci after his voyages in 1501 and 1502, which confirmed that the ‘new world’ was not part of the Indies, but a separate continent altogether. To honor this, Waldseemüller named the continent America, and this map was the first to utilize the name.

4

The Stradivarius

Created by the luthier Antonio Stradivari and his family in the 17th and 18th centuries, Stradivarius instruments are renowned for their exquisite craftsmanship and sound, and are valued in the millions. It is estimated that 650 instruments have survived out of the around 1100 made . Six of them —two violas, three violins, and a cello— are kept in the Library of Congress.

5

Bay Psalm Book

This book of psalms was the first book to be printed in British North America , and it dates to the year 1640, just 20 years after the arrival of the Pilgrims. This copy lacks a title page, and 12 of its pages have been removed. One of 11 surviving copies, it is a valuable testimony to America’s printing history.

6

Leaves of Grass

Whalt Whitman’s Leaves of Grass is considered to be one of the most important poetry collections in American Literature and a celebration of the American spirit. The Library of Congress houses several editions of this book, the most important being a copy of its first edition, self-published in 1855, as well as a page of the original manuscript.

7

Wilbur and Orville Wright Papers

The Wright brothers are credited with the invention, building, and flying the world’s first successful airplane in North Carolina in 1903. This collection in the Library of Congress comprises 10,121 items related to them , including notebooks, photographs, papers, drawings, prints, correspondence, and more.

8

Giant Bible of Mainz

Before the invention of movable type printing, most Bibles were handwritten, a laborious task that could take years to complete. The Great Bible of Mainz is one of the last Bibles made in this way , and it is dated around the year 1452. Made from 459 vellum skin leaves and embellished with illuminated initial letters and borders, this Bible was gifted to the Library of Congress in 1952.

9

Huexotzinco Codex

Composed of 8 sheets of amatl —a pre-Hispanic Nahuatl type of paper—, this 1521 codex registers a legal complaint against a colonial administrator. The Nahua people of Huexotzinco were part of Hernán Cortés’s estate after aiding him in his campaign against the Aztec Empire. During one of Cortés’s trips, the administrators of the estate implemented abusive taxes. After his return, Cortés and the Nahua presented a joint formal complaint, and they were successful. The case was retried in Spain, where the courts and King Charles both agreed with the initial verdict and ruled that excess taxes were returned to the Nahua.

10

Gettysburg Address

One of the most significant speeches of the American Civil War and of American History, the Gettysburg Address was delivered by President Lincoln on the occasion of the inauguration of the Soldiers' National Cemetery , now Gettysburg National Cemetery. Of the five surviving manuscript copies of the short speech —it lasted roughly two minutes— only two were written before the occasion, which were gifted by Lincoln to his personal secretaries, and were later donated to the Library of Congress.

1

It was invented in Switzerland

While the name suggests a US origin, the technology that created American cheese actually began in the heart of the Alps. It was developed in 1911 by Swiss researchers Walter Gerber and Fritz Stettler, who were looking for a way to extend the shelf life of their country’s famous Emmental cheese.

The problem with traditional cheese is that it eventually dries out, molds, or separates into a greasy mess when heated. By shredding the cheese, adding sodium citrate, and heating it, the Swiss duo discovered they could create a stable, smooth product that didn't separate. While they weren't trying to create "American" cheese as we know it today, their emulsification process laid the foundational science for every single-wrapped slice produced today.

2

It was popularized by a Canadian

The man responsible for the global dominance of American cheese was James L. Kraft. Ring any bells? Kraft was a Canadian immigrant who moved to Chicago in 1903. While he didn't invent the concept of processed cheese, he perfected the industrial scale of its production and marketing.

Kraft noticed that retailers struggled with cheese spoilage; if a wheel of cheddar didn't sell quickly, it was a total loss. He experimented with various methods of heating and blending cheese until he found a formula that could be canned and shipped long distances without spoiling. In 1916, he received a patent for his "processed cheese," and during World War I, the U.S. government purchased millions of pounds of it for soldiers, cementing its privileged place in the American diet.

3

It was almost called "Embalmed Cheese"

When processed cheese first hit the market, it had its detractors. Traditional cheesemakers were horrified, and so were pure food advocates. These critics argued that the product shouldn't even be called cheese. They’ve even gone so far as to call it "embalmed cheese" because of its unnaturally long shelf life and the chemical emulsifiers used to keep it stable. Yet, Kraft’s marketing prowess and the sheer convenience of the product ultimately won the naming battle. At least in the court of public opinion.

4

Technically, it isn’t cheese

Kraft may have won the battle among the people, but legally, American cheese is not considered cheese. If you look closely at the packaging, you will rarely see the word "cheese" on its own. Because of strict FDA regulations, most varieties are legally classified as "Pasteurized Process Cheese Product" or "Pasteurized Process American Cheese Food."

To be labeled "cheese," a product must be made primarily of milk, salt, and enzymes. Processed American cheese, however, is made by blending real cheese—usually cheddar or Colby—with emulsifying salts, whey, and sometimes extra milk or fats.

5

Any cheese can be made into American cheese

The term "American cheese" refers more to a process than a specific flavor. In theory, you could make "American-style" brie, blue cheese, or parmesan. The defining characteristic is the addition of an emulsifier, which breaks down the proteins and allows the fats and water to stay together.

In fact, some high-end chefs now make their own artisanal American cheese with aged cheddars processed with sodium citrate to create a slice that has the complex flavor of an expensive block but the melting point of a Kraft Single.

6

It isn’t naturally yellow

The vibrant orange-yellow hue of American cheese is entirely a cosmetic choice. Traditionally, cheese color varied by the season; when cows ate fresh grass in the summer, their milk contained more beta-carotene, leading to a naturally yellowish cheese. To make their cheese look high-quality all year round, cheesemakers began adding dyes.

American cheese takes this tradition to the extreme. It is typically colored with annatto, a seed from the achiote tree. Without this dye, American cheese would be a pale, creamy white, which is how it is sold in many delis as "White American". Yes, that’s right, there is no flavor difference between the white and yellow versions.

7

It has an extremely low melting point

The scientific superpower of American cheese is its meltability. Traditional cheeses have a protein structure that tightens when heated, which is why a slice of aged cheddar on a burger often results in an oily puddle and a rubbery clump.

Because of the emulsifying salts, the proteins in American cheese can withstand heat without clumping together. This gives it an incredibly low and stable melting point, transforming the slice into a silky sauce. This is why it remains the undisputed king of grilled cheese sandwiches.

8

It’s been in space

When you're hurtling through orbit in a cramped capsule, you need food that is stable, easy to eat, and won't crumble into thousands of tiny, electronics-clogging pieces. American cheese fit the bill perfectly for early NASA missions.

Processed cheese in tubes or cubes was a staple of the Apollo missions. Because it doesn't separate or sweat oil in varying temperatures and pressures, it was one of the few dairy products that could reliably provide flavor and calcium to astronauts.

9

It helped bring cheese to the masses

Before the advent of processed cheese, cheese was often a seasonal luxury. It was difficult to transport, expensive to store, and highly variable in quality. James L. Kraft’s invention changed that. By creating a product that was uniform in flavor and shelf-stable, he made cheese affordable and accessible to every corner of the United States.

10

The U.S. Government once gave it out

The U.S. government not only bought tons of American cheese during World War I. In the 1980s, the term "government cheese" became a thing. During a period of dairy surpluses, the government bought millions of pounds of cheese to prop up prices for struggling farmers.

To avoid letting it rot, the Reagan administration began distributing five-pound blocks of cheese to low-income families, seniors, and schools. For many who grew up in that era, that pale orange processed cheese was a lifesaver.