The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

The gilded, masterful astronomical clock will calculate time, dates, and planetary positions for thousands of years to come.

Wooden pavers represent a 17th-century barrier that gave Wall Street its name.

The only geyser in the state of Pennsylvania is caused by pressure from an abandoned coal mine outside of the ghost town Centralia.

This vintage short line in Amish country runs passenger steam train excursions and still hauls freight.

Beneath its placid surface, one of New York City's primary sources of drinking water hides a haunted past.

Texas’s first suspension bridge is still carrying people across the Brazos.

The land is home to swimming ponies and a legendary 18th-century treasure.

The colonial home of Paul Revere during the American Revolution.

The taxidermy remains of the most popular pony in children's literature.

The New Bedford Whaling Museum in Massachusetts displays what it calls the world's largest ship model.

This rustic old building is said to be the most photographed barn in America.

An architect's childhood fantasy treehouse made real.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

New fungal and bacterial species call this deadly lake home.

Modeled after a famous church in Vienna, Austria—but in Helena, Montana.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

The Ayo Rock Formations stand out on the island of Aruba as a unique arrangement of giant boulders with interesting crawl spaces to explore.

Remains of a massive World War II blimp base, now home to a railroad museum.

Artifacts from a battleship sunk at Pearl Harbor displayed in the Capitol building of its namesake.

Browse an impressive collection of passenger and military aircraft dating back to World War II.