An oft-overlooked, magically musical monolith that stands majestically between Arlington Cemetery and the Iwo Jima Memorial.

The only labyrinth within the city of Alexandria.

Home to a 27 room house, this estate was crafted by Black entrepreneur Olander Banks Sr.

This twice-relocated "Usonian" home is among the smallest built by master architect Frank Lloyd Wright.

The well-preserved remnants of a bridge that once made up a WW1-era military railroad.

Every weekend, the parking lot of this Buddhist temple turns into a Thai street-food paradise.

Dozens of feral felines rule a segment of Hollywood's only graveyard.

After starting as a whimsical tourist attraction that eventually found its way to ruin, these renovated canals offer a lush and exotic locale on the Pacific Coast.

This nonsensical smiling boat shuttles passengers between two places they could've easily walked between.

This stunning sea creature-shaped home blends into the landscape like a fantasy villa.

Acres of natural wonders left behind by a socialite-turned-gardener.

The abandoned personal amusement park of the King of Pop.

With its peeling paint and faded sign, this theater-turned-recycling plant is a nostalgic relic of 1950s Americana.

The last of Fairfax County's one-room schoolhouses.

A secret rendezvous spot where John S. Mosby and his Rangers would meet to divvy up their loot after raids.

The 19th-century ruins hide deep in an overgrown forest.

Ancient, mysterious stone altars are hidden among wild woods in central Italy.

The remains of a century-old mansion that met a fiery demise years after it was deserted.

The final resting place for a wealthy Roman family, this tomb might be the best preserved of its kind outside Italy.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

An elegant chandelier hangs over this ancient sewer chamber, now open for concerts and public tours.

A church filled with the bones of hundreds of virgins martyrs—or so they say.

The body of at least one victim of a construction accident was left behind in the collapsed pylon, buried under tons of concrete.

Residing along a busy thoroughfare, this sculpture urges passersby to consider the future.