Disney's abandoned animal island is now an overgrown ruin that was almost the coolest attraction ever.

The longest living non-clonal organisms on Earth.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

A beautiful geyser under environmental threat.

Famously misunderstood wonder of the ancient world

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

This iconic science fiction house still looks like something from the future.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

When ecosystems collide in the arid Southwest.

The highest bridge in America was built for an almost unnervingly small amount of money.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

Few other hotels can rival the grandeur of the Castle in the Rockies.

Devoted Buddhists can earn enlightenment in the next life by crawling through this symbolic nostril.

This titanic oil company sign is a reminder of the Americana boom of the 1970s and also its commoditization.

The Magic House provides a beautiful and creative environment for curious youngsters to get their knowledge on.

What was once a presidential estate is now an exotic menagerie and home to the Budweiser Clydesdales.

Less a museum than a bizarre fantasy world created by artists and engineers.

The magic's in the hole!

This semi-secret garden in south Seattle emulates a traditional Japanese garden using the plants of the Pacific Northwest.

A museum dedicated to the history and exploration of both popular music and science fiction.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.