This naturally-sourced hot spring is now home to a clothing-optional resort.

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

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

The world's only international cryptozoology museum is host to an unrivaled collection of mysterious objects.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

Giant busts of 42 U.S. presidents are sitting in a field in Virginia.

A layered tribute to the work of mosaicist Isaiah Zagar.

The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

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

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

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

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

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

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

Five mythical trolls have taken up residence in woods and hidden on paths at the Coastal Maine Botanical Gardens.

A decidedly out of place statue memorializes the Blues Brothers characters at this water bottling plant.

A giant telephone commemorates the last "crank" call ever made in the U.S.

This 1,700-pound edible sculpture is way better than your average chocolate mousse.

This colorful theme park dedicated the official fruit of Maine serves sweet, tasty treats.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

A house carved into a rock in the 1940s.