Niagara Falls was a key Underground Railroad crossing point

The Canadian side of Niagara Falls has many tourist attractions

The Canadian side features Ripley's Believe it or Not, Louis Tussaud's Waxworks, tunnels behind the Falls and more. A short walk from the falls leads to Clifton Hill, packed with arcades, mini golf, haunted houses, and carnival-style attractions.

Markers along the Underground Railroad

An interactive map of all National Park Service designated sites that were part of the Underground Railroad, helping shuttle escaped enslaved people to freedom.

Niagara power helped electrify early New York City

Tesla's AC system at Niagara Falls was so successful that electricity generated there lit up Broadway theaters and powered NYC's subway system in the early 1900s.

Niagara’s frozen river once hosted winter carnivals

Before a 1912 collapse, winter ice bridges across the river were so thick that entrepreneurs built bars, photo studios, and entire carnival midways on the frozen surface.

Niagara Falls stopped flowing for a full day in 1848 due to ice

In March 1848, ice jams halted the Niagara River entirely for over 24 hours, allowing people to walk on the riverbed—a rare event that drew international headlines.

Water from four Great Lakes feeds Niagara Falls

Niagara Falls is powered by water from Lakes Superior, Michigan, Huron, and Erie. The Great Lakes basin spans over 260,000 square miles and holds nearly 20% of the world's surface freshwater—about two-thirds of which passes over the falls.

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.

You can take a boat ride directly into the mist of Niagara Falls

The Maid of the Mist takes passengers on a thrilling boat ride to the very base of Horseshoe Falls—surrounding them with roaring water and thick mist.

Niagara’s honeymoon tourism was influenced by Napoleon's brother

Niagara falls was once dubbed the “honeymoon capital of the world.” This tradition partially began with a visit by Napoleon's brother Jerome and his wife in 1804.

The Appalachian Mountains blocked east–west boat travel until the Erie Canal

The Appalachian Mountains, spanning from Alabama to Canada, long hindered inland commerce. The Erie Canal created the first reliable water route through the range by leveraging the natural valley of the Mohawk River, revolutionizing trade and migration.

The canal became a highway for American reform movements

Beyond goods, the canal carried ideas. Its corridor hosted Second Great Awakening revivals and became a center for activism—fueling abolitionist networks, women’s suffrage organizing, and other reform movements.

Engineering the Overseas Highway connecting the Florida Keys

A 113-mile series of bridges called the Overseas Highway connects Key West—the southernmost point of the United States—to mainland Florida. The route originally served as a railroad but has required regular reconstruction due to major storms. This video traces the history of the project in fascinating detail.

Grosse Île, the quarantine island of the Port of Quebec

As tens of thousands of Irish emigrated to North America to escape the Great Famine in the mid-19th century, many port cities set up quarantine areas amid an epidemic of cholera. In Quebec City on the St. Lawrence River, one island became a mass graveyard where over 3,000 Irish immigrants died over a decade as they waited in quarantine. Listen to the history here.

Toronto's downtown has 18 miles of underground pedestrian tunnels

Known as the "Path," these tunnels have helped reduce pedestrian traffic on Toronto's busy downtown streets for over a century. They were first built by local business owners, prompting a network effect of add-on tunnels.

The Love Canal disaster exposed the dangers of buried toxic waste

In the late 1970s, residents of Niagara Falls, New York, discovered their neighborhood was built atop 20,000 tons of chemical waste. Leaking toxins caused illness and birth defects, sparking nationwide outrage and leading to the creation of the EPA's Superfund cleanup program in 1980.

In 1711, the New York City Common Council decided that the city’s slave market would operate on Wall Street

In 1711, the New York City Common Council decided that the city’s slave market would operate on Wall Street. Back then, the nation’s economy rode on the backs of slave labor and the slave trade itself—meaning that the slave market’s location was an economic hub for the city.

How America's cocaine habit fueled its migrant crisis

The United States has been facing a migration crisis along its southern border. Thousands of people have been fleeing their homes in Central America, traveling north through Mexico, and claiming asylum in the USA. Much of this crisis can be traced...

The Seneca Falls Declaration was modeled on the Declaration of Independence

At the 1848 Seneca Falls Convention—the first women’s rights convention in US history—Elizabeth Cady Stanton drafted the Declaration of Sentiments, consciously modeled on the Declaration of Independence, to argue that women were denied fundamental rights and justified in demanding legal and political equality.

A letter about a hurricane helped launch Hamilton's life in America

After a hurricane severely damaged the Caribbean island of St. Croix, Alexander Hamilton wrote a vivid letter that was later published and impressed local business leaders, who took up a collection to send the teenager to North America for schooling.

'The Negro Speaks of Rivers’ introduced a teenage Hughes to the literary world

While traveling to Mexico to visit his father, Hughes began scrawling “The Negro Speaks of Rivers” as he crossed the Mississippi River, using the river as a metaphor for the Black experience. The poem was published in 1921 in the Crisis, an NAACP magazine edited by WEB DuBois, kickstarting Hughes’ literary career.

Read Truth's account of escaping slavery in 1826

After her enslaver broke his promise to free her, Truth left before dawn, carrying her infant daughter and a bundle of clothes. She later found refuge with the Van Wagener family, who paid her master $20 for her freedom and $5 for her infant daughter.

The story of the ‘forgotten’ US Mints

Some US Mint branches that are now inactive were established during gold rushes during times of great demand. These include mints in Dahlonega, Georgia, Charlotte, North Carolina, and Carson City, Nevada. This video dives into their respective stories.

The Channel Tunnel consists of an underwater network of over 200 kilometers in length

The passage beneath the English Channel between England and France includes three tunnels, crossover chambers, emergency passages, and air ducts. Burrowing teams in either country consistently checked their coordinates to ensure they would meet within two centimeters of each other.

The last Inca grass suspension bridge in Peru

High in the Peruvian Andes, the aging Q’eswachaka bridge sags precariously over the Apurímac River. It has been built and rebuilt continuously for five centuries. Read more about it here.

The Dred Scott decision denied citizenship to people of African descent

In 1857, the Supreme Court ruled in Dred Scott v. Sandford that Black Americans could not be US citizens. The decision heightened an already brewing conflict and became a key factor in pushing the nation toward civil war.

Emanuel Leutze's painting 'Washington Crossing the Delaware' is one of the defining images of the Revolutionary War

The scene depicts George Washington leading Continental forces across the icy Delaware River on Christmas Day, 1776, enabling a surprise attack on British-paid mercenary troops at Trenton. This risky maneuver revived the revolution after months of defeat.

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

The 19th-century painters of the Hudson River School were among the first American romantics, with portraits that displayed the natural beauty of the young country.

Explore an interactive map of battles from the American Revolution, along with detailed summaries of each engagement

In 1963, a basement renovation in Turkey revealed a passageway to a hidden, multilevel underground city that once housed as many as 20,000 people

Stanford built a Google Maps for the Roman Empire, revealing how much it cost to travel in the ancient world

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.

The US dollar is the most widely circulated currency in the world, and is involved in nearly 90% of global transactions

The Great Salt Lake's distinct dual coloration results from high-salinity organisms that only live in the northern portion and produce a purple protein.

The American cockroach is actually from Africa, an apparent hitchhiker aboard ships carrying enslaved people, with evidence suggesting the bug may have arrived in the New World as early as the 1600s.

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.

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.

Ebola species have historically been named after where they were discovered, stigmatizing residents who live there, including Bundibugyo, in Uganda.

Dorothy's famous entrance into Oz in 'The Wizard of Oz' relied on analog tricks, including a body double and sepia-toned paint, as much as it did on technology

View the ten deadliest tornadoes in US history.

A 2019 Facebook event called on attendees to "Storm Area 51, They Can't Stop All of Us," resulting in countless memes, the creation of a music festival, and eventually the arrests of those who did try to approach the area.

See how Budweiser's famous Clydesdales spend their days at Warm Springs Ranch, where roughly 70 to 80 of the beer brand's giant horses can be found at any given time.

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

While El Niño moves warm Pacific Ocean waters east along the equator, La Niña moves them west, shifting where rainfall will become more common for months.

20,000 letters to the advice columnist 'Dear Abby' provide insight into prevailing sex, religion, and LGBTQ fears, anxieties, and concerns from the 1950s onward.

Some renewable energy sources may weaken the resiliency of electric grids by removing outage buffers provided by coal- and natural gas-fired plants, which provide the system with more time to find a new power source if a plant goes down.

Before humans, the Soviet Union and the United States sent animals—including apes, dogs, and cats—to space during the Space Race.

A small portion of The Winstons' 'Amen, Brother,' an obscure '60s gospel record, is the basis for thousands of hip-hop tracks, making it one of the most sampled records ever that's informally known as 'the Amen break.'

In preparation for this weekend's Eurovision finale, which is something like the World Cup of pop music, here's a young Céline Dion performing (for Switzerland?) at the 1988 competition.