Visible below the waves are memorials to the city's Gold Rush dead.

The haunting, dilapidated remains of a former poorhouse on Staten Island's Greenbelt.

Wild lights and sound effects turn a walk through some caves into an eye-popping 1960s tourist attraction.

A whimsical village of unique treehouses resides in a Washington forest.

Enjoy an overnight at an old haunted B&B site of the Borden family murders.

Hundreds of glow-in-the-dark objects light up a museum in a historic zinc mine.

A bizarre roadside attraction and the first instance of miniature golf in the world.

A spiritual retreat in the heart of Los Angeles offers stunning gardens and a labyrinth to lose yourself in.

The intriguing personal collection of a professional demon-chaser.

After starting as a whimsical tourist attraction that eventually found its way to ruin, these renovated canals offer a lush and exotic locale on the Pacific Coast.

A colorful architectural gem in Seattle's uniquely modern Central Library.

This charmingly homemade amusement park has been growing for 40 years.

Historic funicular railway, believed to be the shortest railroad in the world.

Ruins of the elaborate house where the enigmatic costume designer threw glamorous parties for New York's theatrical elite.

This former lieutenant governor's home is brimming with curiosities.

Stripes of flowers bloom each spring in a 50 acre rainbow of color.

Canyon walls shrouded in ferns.

Oh, just a motel on the edge of the desert decorated with thousands of clowns conveniently located next to an abandoned graveyard.

Sniff the Titan Arum's rotting flesh.

Trails through lava-carved tube-caves display sparkling bacteria and a rich history.

Tour the sci-fi-esque reality of governmental disease management.

Better known as the "Body Farm," this unique research facility has been studying how human bodies break down since the 1980s.

No one knows how this Pacific Northwest spruce tree came to have so many trunks.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.