The bronzed skull of a beheaded traitor was affixed to the city gate in the 17th century.

An open-air sewer system that was covered piece-by-piece over 300 years.

Rare wooden escalators lead deep down into an otherwise staggeringly monotonous tiled tunnel.

This historic Art Nouveau townhouse was the former home of the son of a famous chemical inventor and industrialist.

This museum is housed in an unassuming building that witnessed one of the most daring feats of satire in modern history.

The Belgian royal family's private depot now stands abandoned and forgotten alongside the tracks.

Head underground and take a tour of the city's working sewer system, and see the underground river Senne, which defined Brussels for centuries before being covered in the 19th century.

When you're a great Russian Tsar, even your vomit gets a statue.

Nature is slowly overtaking this disused cemetery on the outskirts of Brussels.

A fantastical 13th-century fortification sandwiched by a modern hotel in central Brussels.

This Greek temple, open only an hour a day, was the site of a war of tastes between an architect and an artist.

This recently restored crypt was once plagued by liquefying coffins and exploding caskets.

Meet the bronze beloved pet to a family of famous peeing statues.

One of the ghostly stops along Route 66.

The liveliest ghost town in the state.

Home of what was the largest hydraulic mine in the world, producing gold and the first diamonds in the U.S.

San Francisco Bay's ghost town.

An abandoned Jazz Age dream home and con man's hideout in Death Valley.

Giant Redwood-themed cafeteria operates under the golden rule, "Dine Free Unless Delighted."

It should come as no surprise that the best view of the Hollywood sign is from Batman's lair.

A little barn in the middle of the city preserving Hollywood treasures since 1985.

This historic iron-working village is now a ghost town so immaculate that it looks as though it was recently built.

A few stone foundations and an old graveyard are all that is left of this once thriving settlement in the wilds of Connecticut.

This old mining town, deep in the California desert, has a year-round population of one.