What was once a trend-setting, phrase-coining icon of architectural splendor is now a rotting, forgotten hulk.

A miniature golf course crafted inside the world's largest simulated cave.

A rock maze opens up to a panoramic viewpoint at an abandoned mine full of ghost stories.

The first American axe throwing club.

This Philly landmark has a giant butterfly pavilion, three floors of insect displays, and withstood a $40,000 heist.

Inside this wonderland of weird, visitors are treated to a collection ranging from skeletons to haunted artifacts.

The entrance to this sinisterly named tunnel hides behind a Tim Hortons.

These sub-farmland caves are home to a majestic stalactite known as the "Crystal King."

This abandoned dream castle and its cemetery look out over the city that once inspired their creation.

A small storefront museum explores the history and myth of West Virginia's famous urban legend.

A particularly creepy abandoned hospital that sparks interest for lovers of the supernatural.

The perfect place to take a family of giants for a beach vacation.

This winding road of 318 curves is a must-visit for (careful) motorcycle and sports car enthusiasts.

A crumbling hospital from the 1850s on Roosevelt Island.