This weeping, 10-foot-tall sculpture was a maquette for a 9/11 memorial.

A desiccated merman and a walrus penis bone are among the oddities in this eclectic collection of shipwreck treasures.

A wrecked ship dating back to the American Revolution was only recently discovered off the Delaware coast.

This splendid Versailles-inspired mansion has the largest French-style formal gardens in North America.

Buildings that dynamite couldn't bring down were abandoned because of bathroom issues.

These tourist trap caverns are said to be the former home of a legendary Pennsylvania Hermit.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

"Dark Sky Park" is heaven on Earth for astronomers, one of the rare U.S. locations with no artificial light pollution.

A stone arch leads to a cavernous 1930s spring house tucked away in the Pennsylvania woods.

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

House of vintage taxidermy and Steampunk sculptures in a quiet Pittsburgh neighborhood.

A toxic ghost town sitting atop a massive coal fire.

A layered tribute to the work of mosaicist Isaiah Zagar.

The only geyser in the state of Pennsylvania is caused by pressure from an abandoned coal mine outside of the ghost town Centralia.

A pyramid commemorates the birthplace of James Buchanan, the 15th president of the United States

For decades, it has disappeared and reappeared as water levels rise and fall.

A museum of anything and everything Stooge.

A retired firefighter created this contraption so he and his family wouldn't die if accidentally buried alive.

Could it have picked a better place to land?

A quirky collection of outsider art made from automobile parts.

In the bowels of a 19th-century brewery lurks a fine-dining restaurant offering an array of themed feasts.

The Master of Magnetism dominates the walls of a scrap metal yard to keep graffiti artists at bay.

Steepest flood safety railway in the entire world.

A glittering Thai Buddhist temple in suburban Pennsylvania.