Tracks near this Texas nature site were once thought to support the Creationist belief that man and dino coexisted.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

A Black Forest cuckoo clock theme park features one timepiece big enough to walk inside.

The nearly 120-year-old piece of pork wears a brass collar and was once a man's "pet ham."

An out-of-the-way wildlife haven with a rich and storied past of harboring thousands of fugitive slaves, or "Maroons" during the mid 1800s.

This environmental engineering marvel keeps salt water from the Elizabeth River.

The world's longest known cave system.

Eight rare Corvettes are swallowed up by a sinkhole in Kentucky's National Corvette Museum.

Final resting place of Geronimo, Quanah Parker, and the first atomic gun ever fired.

American bison herd descending directly from a Bronx Zoo breeding program that saved the species from extinction.

This working class sculpture pounds his hammer all the livelong day.

A wall of chewing gum moonlights as collective art.

This expansive bridge in the Canadian wilderness was originally just built for friends.

A trading post in the North Pole where children send letters.

North America's first frozen mummified remains of an ice age steppe bison, the 36,000 year-old mummy named "Blue Babe."

The king of U.S. high points towers over every other peak on the continent.

Home to items never before seen by the public.

World's largest Christmas store.

Ancient petroglyphs discovered only after a massive fire swept across Michigan in the 1880s.

The Gulf’s longest fishing pier is a year-round paradise for catch-and-release whoppers.

A local landmark with generations of spraypainted messages, and more being added each day.

A striking lighthouse with views of the Gulf of Mexico and of a military air show.

One of the only Florida forts to remain in the hands of the Union all through the Civil War still stands as a historic stronghold.

Pensacola's UFO home has withstood many hurricanes—just as the experimental 1960s design intended.