An old asylum graveyard that's been abandoned for half a century attracts those seeking a dark thrill.

This former insane asylum now holds a pathological anatomy museum.

Macabre museum devoted to historical Viennese murders.

Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

A silly medieval mural preserved on the side of a Viennese house.

Baroque celebration of the end of the Great Plague of Vienna.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

A Trabant car, a kangaroo statue, and a plethora of plants take over this abandoned-factory-turned-bar.

The metal leaves on this tree are engraved with the names of Holocaust victims.

A random tree outside a Budapest hotel has become a DIY shrine to the late singer.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

A triumphant marble and bronze fountain depicting a 15th-century Hungarian king and his hunting party.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

The geographical center of Budapest is marked with a 10-foot-tall stylized zero.

The silly symbol for an underground protest group is now scattered around the city.

A church of bones, decorated with 40,000 human skeletons.

The compass on its front was a handy tool for 17th-century merchants who needed to know the direction of the wind.

Brussels' favorite peeing boy has a sister.

A little sculpture with a large wardrobe.

Medical history with an amazing, if frighting, collection of wax diseases on display.

Cozy basement bar sports an inventory of over 2,000 beers.

Climb inside an iron crystal magnified 165 billion times its normal size.

The Devil’s own choice when he needs a drink in Brussels.

Throughout this shopping mall are medieval ruins that were discovered during the mall's construction.