It would take 35 firetrucks to fill this enormous glacial pothole.

Board a mine car and descend the #190 slope 300 feet underground into the Clark Vein of coal.

A mine fire has been burning under the deserted town since 1962, but this church is still going strong.

Ant sculptures march up the side of what used to be an iconic spot in punk rock lore.

The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

The internal railway of one of the biggest steel plants in America has been transformed into a linear park with unique industrial views.

This abandoned Poconos resort is haunted by a history of kitschy romance and a violent fugitive.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

A layered tribute to the work of mosaicist Isaiah Zagar.

A toxic ghost town sitting atop a massive coal fire.

This strangely amalgamated museum explores the history of the Timex clock company as well as archaeology.

A reliquary of pop culture marvels, including the world's largest (and most terrifying) Jack-in-the-Box.

This small-town pizzeria won the Hollywood lottery.

Holding multiple historical boats and an entire 19th century village, this New England attraction is the largest maritime museum in the world.

Quirky castle designed by the American actor best known for portraying Sherlock Holmes on stage.

A religious-themed park filled with folk art to bring biblical stories to life that fell into disrepair and now being restored.

A winding, cliffside stretch of road overlooking the Delaware River.