The National Mall's oldest building is the Lockkeeper's House

The National Mall once had canals and rail lines

In the 1800s, the National Mall looked nothing like it does today. Canals, rail lines, markets, and industrial uses crisscrossed the Mall before later redesigns cleared it into a unified civic landscape.

Take an architectural walking tour of the National Mall

Architect Nicholas Potts leads a walking tour of the National Mall, noting that many buildings adapt European neoclassical styles into an American form, such as replacing traditional motifs with corn cobs on the columns of the US Capitol building.

Take a tour of the Museum of Natural History

Opened in 1910 on the Mall, the National Museum of Natural History is among the Smithsonian's oldest museums. Its scientists steward more than 148 million objects and specimens—making it the largest natural history collection on Earth.

Go inside the Washington Monument

This video tour of the Washington Monument explores its interior, construction delays, political battles, memorial stones, earthquake damage, and later modernization—showing how symbolism, engineering, and 19th-century politics shaped the nation's tallest monument.

The National Mall hosts one of the country's largest July Fourth fireworks shows

Each Independence Day, the National Mall hosts a massive fireworks display coordinated by the National Park Service, drawing hundreds of thousands of spectators to the nation's capital.

Washington DC's first public library, built in 1903, now operates as an Apple store

The Carnegie Library served as DC's central library until 1972, when overcrowding forced a move to the Martin Luther King Jr. Memorial Library. After sitting unused for five years, the building changed hands several times before Apple agreed to restore it and open a store there in 2016.

America’s founding documents were once housed in other government buildings

Today, the Constitution and Declaration are displayed at the National Archives. Still, for more than a century, they were kept by other federal institutions—including the State Department and the Library of Congress—before gaining a permanent home in the 1930s.

The White House still has its original stone walls

Construction of the White House began in 1792 and continued even after 1800, when John Adams moved in. Despite being burned by British troops in 1814 and repeatedly renovated since, the White House's original Virginia sandstone walls remain intact.

Washington, DC, was designed by French-born architect Pierre L'Enfant

Pierre Charles L'Enfant was an engineer who fought in the American Revolution. George Washington chose him to design the capital for his military service, artistic training, and vision of a monumental national city.

The original canal had 83 different hand-operated locks

Locks are gated chambers that raise and lower boats between stretches of water at different levels. On the Erie Canal, 83 such locks managed a 565-foot elevation change from the Hudson River to Lake Erie.

Congress meets and legislates in the US Capitol building

The United States Capitol reflects neoclassical ideals drawn from ancient Greece and Rome. First opened to Congress in 1800 and repeatedly expanded over time, it remains the symbolic and functional home of both The House and The Senate.

The Compromise of 1790 broke a deadlock over debt and the national capital

In 1790, Alexander Hamilton, James Madison, and Thomas Jefferson reached an agreement that allowed Congress to assume the states' war debts and to approve a permanent national capital on the Potomac River.

Early Washington lodging was scarce and uncomfortable for new congressmen

Boardinghouses near the Capitol in 1800 were so limited that many congressmen had no private rooms. Albert Gallatin complained that he had to share a bedroom with another congressman, "and look upon the same male faces day in and day out."

The Lincoln Memorial was almost never built

The Memorial faced years of opposition from Speaker of the House Joseph Gurney Cannon, who blocked it for nearly a decade, arguing that the swampy land west of the Mall was an unfit and undignified site to honor Lincoln.

See the White House bowling alley in use

First installed in 1947 for President Harry Truman, the White House bowling alley was later moved to the basement of the Executive Office Building. President Nixon, an avid bowler, added a new one-lane alley beneath the White House in 1973.

DC has the highest share of low-income renters on housing assistance in the country

Seventy-two per every 1,000 residents in the nation's capital were low-income residents on housing assistance as of the year 2024.

The Vietnam Women's Memorial was the first monument to American military women on the Mall

Dedicated in 1993, the Vietnam Women's Memorial became the first monument on the National Mall honoring American military women and recognizing the estimated 11,000 women who served in Vietnam.

Explore the world's oldest constitutions

The 1789 US Constitution remains the oldest active written national constitution. Older systems exist—such as San Marino’s statutes or the Magna Carta—but they are not single, codified constitutions. See how other countries compare in this visualization.

The skinniest house in America was built out of spite

John Hollensbury was a brickmaker in the early 1800s, living in Alexandria, Virginia. He also had the misfortune of living next to an alley around 7.5 feet wide where horse-drawn carriages scraped against his wall and rowdy loiterers stood by. To solve his problem, he built what is now known as the Alexandria Spite House. Read more about the home created to end neighborhood riffraff.

Washington's whiskey distillery at Mount Vernon was one of the largest in the country

By 1799, Mount Vernon's distillery produced nearly 11,000 gallons of whiskey annually, making it one of the largest commercial distilleries in the United States during Washington's lifetime and a significant source of income for the estate.

6 union history facts

Founded in 1794, the Federal Society of Journeymen Cordwainers (who were leather workers and cobblers) is considered to be the first union in the United States.

The mysterious Fort Knox houses much of America’s gold reserves

This fortified vault, built in 1936, is part of the US Mint, but it doesn’t create any currency. Only a presidential order can open Fort Knox—there has not been an audit of its contents since 1953.

Eliza Scidmore advocated for planting cherry trees in Washington, DC, in the early 1900s

The first female writer for National Geographic, Scidmore championed planting Japanese cherry trees around the Tidal Basin in Washington, DC. Her idea succeeded in 1912, after years of lobbying, creating one of the National Mall's most enduring traditions and tourist draws.

The US Constitution is widely regarded as the longest-standing written national constitution still in force—see how it has influenced rights worldwide.

McCulloch v. Maryland upheld implied powers and blocked states from taxing the federal government

In 1819, McCulloch v. Maryland confirmed that Congress may use implied powers under the necessary and proper clause and ruled that states cannot tax federal institutions, reaffirming the supremacy of the federal government within its constitutionally delegated powers.

The Mint’s first circulating coins were 11,178 copper cents

Congress authorized the first national mint in Philadelphia. The next year, the Mint delivered its first circulating coins, which were bigger than today’s quarters. This article shows more early US currency.

Before the current East Wing ballroom project, only two White House renovations in the past 100 years cost more than $10M.

The original copy of the Declaration of Independence is not a pristine document, and even features a smudged anonymous handprint in the bottom left corner.

Many legends about George Washington, including his supposed wooden teeth and the story of cutting down the cherry tree, lack evidence.

Hear about the 250-year history of the United States Postal Service, complete with some of its strangest deliveries, important innovations, and the figures that made it an American institution.

'Grand Canyon of the Yellowstone,' a work by American painter Thomas Moran, inspired Congress to establish Yellowstone National Park.

Abraham Lincoln was almost assassinated weeks before his inauguration as he traveled from Illinois to DC through Baltimore in 1861; it took two independent claims for Lincoln to be convinced the threat was real

In 1915, workers recovered a submarine-like vessel from the Chicago River, prompting fears of German espionage

Legendary architect Frank Lloyd Wright designed the SC Johnson headquarters in Wisconsin, aiming to make a cathedral-like workplace

The rivalry between Alexander Hamilton and Thomas Jefferson centered on federalism—the question of how much power the federal government should hold relative to the states.

The story of Dollree Mapp, whose legal challenge over her 1957 conviction for possessing "obscene material" led to a major strengthening of the Fourth Amendment

Jimmy Carter signed a 1978 bill that legalized home brewing, a move credited with kick-starting the craft beer industry.

Sears sold DIY house kits starting at $600 in its famous catalog from 1908 through the 1940s, resulting in roughly 10,000 'Sears and Roebuck houses' being built.

The first horror movie is believed to be George Méliès' 1986 short 'The Haunted Castle,' which pioneered the use of special effects

For centuries, Niagara Falls has been a magnet for daredevils seeking to conquer one of nature's most powerful wonders, with its 200-foot drop and water rushing at 32 feet per second with 280 tons of force.

The American Society of Civil Engineers' infrastructure report card gave the US a C in 2025, its highest grade since the project launched in 1998.

See a ranking of the best (and worst) Federal Reserve Chairs since 1914 out of the 16 men and women who have held the office since.

For centuries, it was common to sleep in two shifts: a few hours at the beginning of the night, and a longer period beginning around midnight

See a 3D reconstruction of Tenochtitlan, the Aztec capital that was home to an estimated population of 200,000 to 400,000.

The US first hosted the World Cup in 1994, a tournament that lives in soccer infamy for its poor planning and the murder of Colombian player Andres Escobar, who'd accidentally scored on his own net.

When you complete a CAPTCHA on a website to prove you are human, you may be unknowingly training algorithms for self-driving cars, whose systems require training data to help identify crosswalks, bicycles, and other outdoor objects.

Most of the observable universe's volume consists of voids and supervoids—enormous regions of space with little to no galaxies, stars, or light.

The term 'algorithm' originated from the Latinized name of al-Khwārizmī, a 9th-century mathematician whose works introduced Arabic numerals and the decimal-based numeral system to Europe and whose treatise 'Al-Jabr' gave algebra its name.

Scientists can determine Earth's past climate conditions by analyzing air trapped in microscopic bubbles within ice cores—columns of compressed snow layers that build up over hundreds of thousands of years.

Memecoins are a type of cryptocurrency—a form of digital currency with a wide variety of uses—created around popular 'memes,' or viral internet jokes.