Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Macabre astrological automaton clock dating to the late 1400s.

Copenhagen's celebrated theme park and gardens.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

A little sculpture with a large wardrobe.

Three floors of musical instruments coming from all corners of the world and hundreds of years of musical history.

This irregularly shaped sea fortress has defended not one but three different sovereign states.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

This ancient theater was once the home of fierce gladiatorial battles.

The celebrated eyesore created by starry-eyed sweethearts.

This demon atop the Notre-Dame de Paris looks utterly bored.

This surreal statue brings a famous French novel about a supernatural cad to arresting life.

This centuries-old gothic monster has been converted into a sprawling, glossy bookstore.

A statue of the second-tallest Dutchman in history.

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.

This Netherlands museum holds a gloriously mechanical collection of ornate musical automata.

Now a museum, this building was once a 14th-century monastery and the place where the founder of the Dutch nation lived and was assassinated.

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

A massive Montreal stadium that has seen nothing but trouble since its inception.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

Underground tunnels once home to crime are now back open to the public.