A grumpy old water goblin guarding an old mill on the Devil’s Stream in Prague.

The tiny Belgian town's ancient version of Mardi Gras involves eerie wax masks, sticks for warding off evil, and ostrich plume hats.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

This cemetery features modernist statues as strange as its name.

The medieval woodcut-style artwork chronicles life in medieval London.

During the summer months, giant teddy bears take over Paris near Les Gobelins metro station.

This amazing example of Valencian Art Nouveau looks more like a cathedral than a public market.

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

The 20-mile causeway that separates the Netherlands from the sea.

One of the longest wooden benches in the world snakes around Geneva's Treille Promenade.

An astounding collection of taxidermy, fossils, skeletons, and even a few strange live beasts.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

Old ships and machinery fill a historic harbor in the city that's home to Europe's largest port.

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

A little sculpture with a large wardrobe.

Each spring, a dreamlike carpet of bluebells overtakes the forest floor.

A controversial magical figure is hidden within a diorama of the city.

Discover the taste of mold.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

Spinning silently in the lobby of an Art Deco masterwork is a massive vintage model of the Earth.

A miniature rainforest is growing inside of a Midtown Manhattan office building.

A semi-scholarly approach to sex.

An artist's cute bronze subway sculptures belie his violent artistic past.

Elevated freight railway turned wildly successful urban park.