A notoriously corrupt Chief of Police's deteriorating Greek-themed playhouse.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

A sinkhole known simply as "The Hole."

This island hill is strewn with boulders carved by shipwreck victims from the age of sail.

A Circus legend leaves an unexpected endowment.

"I did this all while you were watching TV."

100-year-old shipwreck you can walk up to at low tide.

A music-filled, booze-soaked oasis in the desert.

Oldest building in California still in use.

This replica of the Greek structure is in the heart of Nashville.

At 135 years old and counting, this historic print shop is heaven for poster nerds and music buffs.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

The semi-reclaimed ruins of this canal were once part of an ambitious plan to reroute the mighty potomac.

World War II bunker still standing on the New Jersey beach.

Memorializing an American tragedy of massive proportions.

The rusting remains are visible sticking out of the waters of the Delaware Bay.

Steepest flood safety railway in the entire world.

A fake town founded by Western movie stars is now becoming a hip desert community.