Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

Taxidermied cartoon heads, unseen illustrations, and famous characters all reside in this small gallery space.

The oldest operating Mississippi River–style steamboat still navigates the Ohio River.

This abandoned cemetery has a dark past of bodies buried over bodies.

The world's longest known cave system.

This legendary urban waterfall creates a dazzling display of rainbows.

Watch the newest land on the planet form before your eyes.

This abandoned NASA launch site is now a memorial to a trio of astronauts who were killed there.

The magic's in the hole!

A World War II battle site made famous by one man's heroic actions.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

An extraordinary mixture of natural beauty and man-made phenomena.

The timeworn "Yankee Stadium" of the fastest game in the world isn't going anywhere.

The museum chronicling a treasure hunter's dream, fulfilled.

The highway's southernmost spot is a beloved local attraction.

A historic presidential getaway on the continental United States' southernmost island.

"We Seceded Where Others Failed."

The unique collection includes bronze cast handprints of some of America's most famous astronauts.

A monument celebrating the idea of reaching inaccessible places.

A mysterious castle built as a monument to lost love.

This extravagant Art Nouveau rest stop features a million-dollar view of the Columbia River.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

Mysterious 500-year-old tapestries depict a unicorn hunt.

Despite a legend that says this highest peak in Oregon was climbed in high heels scores of people have died on its slopes.