A favorite haunt of dinosaur loving children and hallucinogen loving hippies alike.

A pair of slides and a tree-lined stair corridor have been an urban oasis for nearly 40 years.

The only theatre in the world constructed specifically for sound movement.

This weird abode has inspired everything from the "House On Haunted Hil" to a robot hunter's pad.

Hidden in the hills of Hollywood, this secluded Oz-themed garden is dotted with dozens of thrones.

One man's homage to the sun continues to grow like a glass fractal.

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

America's most famous piece of self-built architecture.

The abandoned zoo enclosures offer a perfect place to experience the other side of the bars.

The legendary building that needed ghostly approval before being built.

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

Non-profit time travel mart sells goods you would need for a trip through the fourth dimension.

An artsy hidden staircase leads to breathtaking views of San Francisco.

The moving metal works of one troubled artist can still be viewed on his front lawn... for now.

A recreation of an Old West apothecary full of curios.

While most of the games in this arcade take quarters, that would have been a small fortune when they were made.

A collection of fading fantasy tchotchkes lines this dirt road in the Colorado wilderness.

The world's largest key collection features keys to the White House, Frankenstein's castle, and Hitler's bunker.

While comics are the main attraction at this megastore, the second floor plays host to an exhibit fit for a museum.

This deserted Gold Rush town is home to a Masonic lodge that, strangely enough, still holds meetings.

This Boeing KC-97 tanker is now a restaurant for aviation lovers.

Silver in the hills led to the speedy creation of this boom town and a lack of it saw the town abandoned nearly as quickly.

One woman's UFO-themed campground, complete with self-built energy vortexes, UFO-themed weddings, and magic bushes.

Rather than a run-of-the-mill franchise hotel, this lodging has been decked out in dinosaur decor.