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

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

The space-age building is home to one of the few remaining rotating restaurants in America, and the only one that inspired a 1980s sitcom.

A little barn in the middle of the city preserving Hollywood treasures since 1985.

This hilltop park offers magnificent views and a Frank Lloyd Wright masterpiece.

Historic marionette theater features thousands of handmade puppets and free cups of ice cream.

This grand mansion has starred in everything from Bones to Buffy.

A faux European lane smack dab in downtown L.A.

Finally the worlds of UFO enthusiasts and beef jerky lovers have come together in this roadside shop.

This giant temperature attraction created some giant electric bills.

The "Fun Spot of the Desert" is now a haunting ruin, and a reminder that putting a water park in a desert is a bad idea.

Decommissioned experimental solar facilities that pioneered solar energy technology.

Giant jewel-toned statues fill the grounds of this Cambodian Buddhist temple in California.

The final resting place of one of Hollywood’s most prolific and talented actors is on the grounds of a California Mission.

A 50-foot tile mural mosaic for the 100-year anniversary of the Statue of Liberty.

This centerpiece of the Hollywood & Highland shopping center is a recreation of a long-lost movie set.

A Cold War site complete with rusty structures, hiking trails, and beautiful views.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

Friendships have been forged over ham and eggs every Wednesday morning for nearly a century.

A visionary, futuristic sculpture in Los Angeles that never met its extraterrestrial potential.

Los Angeles's oldest cemetery allows visitors to trace the history of this proud city.

Nancy Thompson's Home from "A Nightmare on Elm Street."

The neighborhood shop is a sort of tiny cactus museum full of exotic specimens you can take home.

Panorama exhibition hall in old silent theater with a beautiful backyard garden.