This knobby, drooping New Orleans oak is a favorite place both for climbing and for meeting giraffes.

Rainbow-hued local gem in Venice.

Secret Manor, a house full of legends, the least of which is the haunting of long-deceased ladies of pleasure.

A strange house built only at night, with rumored mystic inspiration.

A giant Troll lurks under one of Seattle's oldest bridges.

A layered tribute to the work of mosaicist Isaiah Zagar.

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

An old vending machine serves up unpredictable beverages from its seemingly magical insides.

A crumbling hospital from the 1850s on Roosevelt Island.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

Golden Gate Park's historic collection of plants.

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

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

A huge musical instrument played by the ocean.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

Ruins of a Carnegie family mansion on Cumberland Island.

The loneliest island in New York.

Twice a year, visitors can tour the desolate site that birthed the Atomic Age.

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

You might know it as the Overlook Hotel, but the inside is not going to be familiar.

The programmatic glory of LA's giant whiskey barrel building has become an upscale reminder of the city's kitschy roadside past.

Home to the "Circus" trees created by Axel Erlandson.

Huge masonic hall in Philadelphia with lavishly themed rooms.