The world's greatest slide descends 18 stories from this looping mountaintop viewing platform.

This vertical pinnacle in China was the inspiration for the floating mountains in the movie “Avatar.”

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

Come for the speed, leave in love with the desert.

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

Other-worldly rock formations and ancient fossils abound in this unique stretch of Nebraska badlands.

The giant pair of sexy legs sticking out the window of this costume store have become its main draw.

Reverend Franzo Wayne King administers spiritual enlightenment through the music of the jazz legend.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

A still functioning vaudeville carousel that has operated for over a century boasts a colorful menagerie and past.

A hidden subterranean installation offers a view of the sky.

Get lost in this haunting fairytale art walk through a man-made eucalyptus grove.

The restored and active Victorian-era final resting place of San Francisco.

Nestled in the heart of San Francisco’s bustling Financial District stands a unique homage to the Mayan and Beaux Arts.

An essential stop before plundering, BYO Cutlass.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

San Francisco's newly reopened hands-on science museum.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

A 140-year-old castle with underground caves hidden in San Francisco.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

This shop specializes in oddities and Victorian-inspired wonders.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.