One of the most unusual geological features, recognizable from a dozen hit movies.

A Tucson museum and performance space full of found-object movable sculptures.

This research center for rare prosimians is studying how they sleep to help prolong human life.

Collection of vintage trailers double as hotel rooms.

Unknown to many, this sparkling turquoise lake hides amid Oregon's snowcapped mountains.

A promotional sun clock on the site of San Francisco's great raceway.

Dinosaurs invade a suburban Nashville neighborhood.

The absurd creation is a compulsory destination for selfies in Buffalo.

This large cave is a summer home to thousands of bats and has a rich history dating back to prehistoric times.

This Route 66 classic sports a giant fiberglass rabbit that you can ride.

Hikers can still stroll beneath the long conveyer of this abandoned mining facility hidden in a West Virginia river gorge.

Former farm staffed by mental patients is now a public park.

This scented city oasis was a labor of love.

This semi-spooky remnant of an abandoned hotel provides fantastic views.

Jacksonville's highways rendered this century-old grammar school unusable.

Preserving the remains of Native American cultures which otherwise would have been submerged behind Hoover Dam.

This folk art compound was built by a fortune teller on the advice of three people from the future.

An architect's childhood fantasy treehouse made real.

The haunted reputation of these abandoned Colorado train tunnels is probably not helped by the terrifying spiked fence.

A nature and cultural preserve named for its multitude of petroglyphs carved by the Northern Sinagua people.

Despite being burnt down multiple times, the ruins of this South Carolina church are still standing.

Live long and prosper in Tennessee.

The hotel room where Janis Joplin tragically died has now become a makeshift shrine to the singer.

The crown jewel of the Queens Museum is a nearly 10,000-square-foot architectural model of the city originally built for the 1964 World's Fair.