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Ancient origins

Image: Ameer Basheer

The Grand Canyon isn’t just old—it’s millions of years older than previously thought. Some rock layers at the bottom date back 1.8 billion years, nearly half the age of Earth itself. While the canyon itself is around 5 to 6 million years old, recent studies suggest parts of it began forming 70 million years ago—during the dinosaur era.

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Once an ocean floor

Image: Yannis Papanastasopoulos

Long before it was a canyon, this region sat beneath an ancient sea. The Kaibab Limestone, the canyon’s top layer, formed from marine fossils left behind as the waters receded 270 million years ago. The presence of coral, shellfish, and even shark fossils proves the area was once home to a thriving ocean ecosystem.

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Carved by more than water

Image: Wolfgang Hasselmann

While the Colorado River played a huge role in shaping the canyon, other forces were at work. Volcanic activity, tectonic uplift, and even landslides helped carve out its immense depths. Lava flows from nearby volcanoes poured into the canyon, creating layers of rock that tell the story of violent geological change.

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The earliest human inhabitants

Image: Russ McCabe

Humans have lived near the Grand Canyon for at least 12,000 years. The earliest known inhabitants were Paleo-Indians, who left behind stone tools and spear points. Later, the Ancestral Puebloans built cliff dwellings and left behind intricate pottery, proving that this seemingly inhospitable land was once home to thriving communities.

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First European encounter

Image: Antoine Vidal de La Blache

Spanish explorer García López de Cárdenas was the first European to lay eyes on the canyon in 1540. Sent by Francisco Vázquez de Coronado in search of legendary cities of gold, he and his men were shocked by its vastness. They tried to climb down for water but failed, unable to comprehend its sheer scale.

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Named a national monument

Image: Benjamin Cutting

President Theodore Roosevelt designated the Grand Canyon a national monument in 1908, calling it a place "every American should see." He was instrumental in protecting it from commercial exploitation, setting the stage for its eventual National Park status in 1919.

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Hidden caves

Image: Russ McCabe

The Grand Canyon contains over 1,000 caves, but fewer than 400 have been explored. Some remain completely untouched, preserving prehistoric fossils and evidence of ancient human life. Today, only one cave is open to the public—Grand Canyon Caverns, located nearby in Arizona.

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Phantom ranch

Image: Annie Spratt

Built in the 1920s, Phantom Ranch remains one of the most isolated lodges in America. Located at the bottom of the canyon, it’s only accessible by hiking, mule ride, or rafting. Due to high demand, reservations are awarded through a lottery system.

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America’s first canyon explorer

Image: Alex Moliski

John Wesley Powell led the first recorded expedition through the Grand Canyon in 1869. With one arm lost in the Civil War, he braved the Colorado River’s treacherous rapids in wooden boats. His journey mapped the canyon’s uncharted territory, proving it wasn’t an impassable wasteland but a geological treasure trove.

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Forgotten civilizations?

Image: Otacilio Maia

In the 1930s, explorer Emery Kolb uncovered a sealed cave in the canyon containing ancient artifacts and human remains. Some speculated it belonged to a lost civilization, but archaeologists determined it was a prehistoric Native American site. The canyon still holds thousands of undiscovered archaeological sites, adding to its mystery and historical significance.

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California - "Eureka"

Image: Chor Tsang

According to legend, after the Ancient Greek mathematician Archimedes discovered his groundbreaking principle, he happily proclaimed, " Eureka! " This expression, which means "I have found it," is almost as famous as Archimedes’ work, so it stands to reason that the State of California chose Eureka as its state motto.

The Golden State’s slogan references the California Gold Rush. It is believed that a miner who finally struck gold was as excited about his discovery as Good Old Archimedes was. While the California State Seal has included the word Eureka since its design in 1850, it was only adopted as the state’s official motto over a hundred years later, in 1963.

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Kansas - "To the stars through difficulties"

Image: Taylor Hunt

In 1861, the State of Kansas adopted its official state seal which depicted a beautiful prairie at dawn, filled with hardworking Kansans under 34 stars and the Latin motto Ad Astra Per Aspera. Anyone who reads the English translation of this motto will immediately realize how perfectly it describes the industrious and resilient people of Kansas: Ad Astra Per Aspera means "To the stars through difficulties."

Our 34th state chose this phrase alongside its state seal in 1861, only a few months after the first Governor of Kansas delivered the inaugural "State of the State" address. Nowadays, this motto stands as a reminder of both the bravery and diligence of the state’s first settlers, as well as the hardships that Kansas had to go through in order to gain statehood.

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Indiana - "Crossroads of America"

Image: Steven Van Elk

The phrase "Crossroads of America" has long been associated with the state of Indiana , particularly after a specific intersection in Terre Haute, where U.S. Highways 40 and 41 met. Over time, Indiana itself proudly embraced the title of "the Crossroads of America," eventually adopting it as the state motto in 1937.

Interestingly, while "Crossroads of America" is the state’s official motto, some Hoosier cities have adopted this phrase —or variants of it— as their respective city slogans. For instance, Indianapolis adopted the motto in 1988, to reference how the city serves as a junction of 4 different Interstate Highways.

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West Virginia - "Mountaineers are always free"

Image: Sara Cottle

Have you ever reached the summit of a particularly steep mountain after hours of arduous trekking? If you had to describe that amazing feeling in one word, what would it be? We’ll leave you to ponder that while we tell you the first word that came into our minds: freedom.

Apparently, we share this feeling with the good people of West Virginia , since its motto reflects the freedom that its magnificent mountains and hills inspire. West Virginia’s motto is the Latin phrase Montani Semper Liberi, which means "mountaineers are always free." Furthermore, since one of West Virginia’s demonyms is "mountaineers," this phrase also speaks to the core of West Virginians’ identity.

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New York - "Excelsior"

Image: ben o'bro

Any Marvel fan will associate this phrase with comic-book legend Stan Lee, after all, he made this word his catchphrase throughout his many media appearances. However, you might be surprised to learn that "Excelsior" is also New York’s official state motto, and it perfectly describes New Yorkers’ industrious and resilient nature.

"Excelsior" is a Latin word that’s commonly translated as "Ever Upward," but it can also mean "higher" or "superior." It is featured in New York’s coat of arms, which features the representations of Liberty and Justice standing above the state’s motto.

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Montana - "Gold and Silver"

Image: Trevor Vannoy

Just like West Virginia, Montana pays tribute to its breathtaking mountains and landscapes with its motto. However, it focuses on another key aspect of its geography, more akin to its nickname: Montana’s motto Oro y Plata literally translates to "Gold and Silver," which is a direct reference to The Treasure State’s proud mining history.

Montana first included the phrase Oro y Plata on its State Seal many years before it was adopted as the state’s official motto. Shortly after Montana was declared an official U.S. territory in 1864, the newly formed state honored the gold rush that had led to its territorial status by including its two most precious metals into its State Seal. Finally, the state motto was officialized in 1865.

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Tennessee - "Agriculture and Commerce"

Image: Nathan Anderson

It’s no secret that state mottos sometimes reference their state’s most prominent industry: As we mentioned before, Montana and California pay tribute to the mining that helped build their economies. In that regard, Tennessee is no exception; its state motto is incredibly straightforward, directly praising the industries that helped the Big Bend State grow.

Tennessee chose "Agriculture and Commerce" in 1987. In turn, this motto was directly taken from the State Seal, which was adopted in 1801. The seal shows both sides of this state’s industry, with "Agriculture" referenced by a bundle of wheat and a cotton plant, while "Commerce" is depicted by a riverboat, presumably trading goods.

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Texas - "Friendship"

Image: Brandon Zanders

Texas’s state motto may only feature one word, but it singlehandedly describes an essential part of Texan history. Before we can delve into that, though, we have to take a quick look into the etymology of the name of this great state. The word Texas is believed to come from the Caddo word táy:shaʼ , which means "friend." Spanish settlers adopted this word for the area, spelling it as Texas or Tejas.

In that sense, Texas pays homage to its history with the single-word motto "Friendship." Not only that, while Texas is mostly known by the nickname "The Lone Star State," its official slogan is "The Friendly State."

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Vermont - "May the fourteenth star shine bright" & "Freedom and Unity"

Image: Eric Chen

Vermont is the only state on this list to feature two official mottos: "Freedom and Unity" and the Latin phrase " Stella quarta decima fulgeat, " which translates to "May the 14th Star Shine Bright." Interestingly, this last phrase is also the newest slogan to be made official, since it was elected as Vermont’s state motto in 2015.

In any case, both mottos represent Vermont’s individuality, strength, and, perhaps more importantly, its solidarity: "Freedom and Unity" describes Vermont’s mission to create a free and neighborly community, while "May the 14th Star Shine Bright" depicts the search of the common good throughout the entire state.

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Rhode Island - "Hope"

Image: Praswin Prakashan

We’ll end this article with probably the most beautifully simple American state motto. The State of Rhode Island has the single-word motto "Hope," which is also featured in its State seal. In tune with their long maritime history, the seal depicts a golden anchor emblazoned in a dark blue field.

The inspiration behind both Rhode Island’s state motto and seal is probably a biblical quote found in the New Testament, which reads "Hope we have as an anchor of the soul." Considering that this state was founded by a Christian minister seeking to escape religious persecution, this single word expresses a very powerful sentiment: the hope that people could find in this new land a place of refuge and freedom.

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12 years of all tweets

Image: Marten Bjork

If you were an active and public Twitter user between the years 2006 and 2017, guess what? Your words are preserved in the Library of Congress .

The platform’s first twelve years are contained in a digital collection meant as a historical record of a new communications channel. From 2018 onwards, the Library started acquiring only "particularly interesting" tweets.

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Oddly specific movies, like "Shrek" or "Wall-E"

Image: Denise Jans

The Library preserves film culture through the National Film Registry and other collections.

Recent registry additions have included animated hits such as Shrek , while the Library’s preservation programs and official announcements explain why even mainstream animated features matter as cultural artifacts worth saving. The Registry also contains enduring classics such as Grease , Citizen Kane , and The Wizard of Oz .

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Specific songs, like "Livin’ La Vida Loca"

Image: Bruno Guerrero

Music enters the Library’s life via the National Recording Registry and the Music Division. Ricky Martin’s "Livin’ La Vida Loca" is one of the recordings the Library has recognized for cultural impact; these entries help posterity understand what particular songs meant to listeners at the time.

Other anthems are also preserved in the collection, like Aretha Franklin’s " Respect " and Journey’s " Don’t Stop Believin. "

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A moldy wedding cake

Image: gryzoon

A sliver of wedding cake from P.T. Barnum’s era spectacles survives in the Library of Congress’s Manuscript Division as a historical oddity. Donated in the 1950s, it now sits darkened with age and mold.

The cake came from the wedding of Charles Stratton, who was 25 years old and just 35 inches tall at the time. Stratton performed in Barnum’s shows under the name General Tom Thumb, delighting audiences with his song-and-dance routine.

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A map of the Grand Canyon made of chocolate

Image: Steve Johnson

Yes, that is a real thing. The Geography and Map Division highlights a 1991 topographic map of the Grand Canyon molded in chocolate , made by the Chocolate Topographic Company.

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What Lincoln was carrying when he died

Image: Engin Akyurt

The Library’s Treasures and related pages describe the modest, deeply human contents found on Abraham Lincoln after he was shot : a silk-lined wallet with newspaper clippings, a Confederate five-dollar bill kept as a curiosity, spectacles, a pocketknife, a handkerchief, and a watch fob, among other everyday items.

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Locks of hair from Jefferson, Beethoven, and others

Image: benjamin lehman

Why not? The Library’s Manuscript and Music Divisions preserve numerous strands of hair attributed to notable figures : from presidents such as Thomas Jefferson to composers like Ludwig van Beethoven, as well as other cultural icons including Walt Whitman, Clara Barton, and George Washington!

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Thomas Jefferson’s vanilla ice cream recipe

Image: Colin Fearing

Among Jefferson’s papers, which the Library and Monticello both reproduce and discuss, is his handwritten vanilla ice cream recipe : cream, egg yolks, sugar, and vanilla, frozen using ice and salt. A fundamental (and surprisingly delicious) document of history!

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A precursor of the Monopoly Game (The Office Boy)

Image: Kathy Marsh

Monopoly’s genealogy includes several predecessors. Most famously, Elizabeth Magie’s 1904 The Landlord’s Game is the well-documented precursor.

Other commercial board games , such as Parker Brothers’ The Office Boy (an 1889 Horatio Alger–style career game), along with various moral and occupational boards, helped shape the emerging mass-market game industry that ultimately produced Monopoly .