The birthplace of Karl Marx is now a museum dedicated to the communist revolutionary's life and work.

Gardens representing parts of Asia, Europe, and the Mid East are tucked away among the Soviet-style buildings in East Berlin.

A memorial for a young woman and her ghost, which are claimed to have caused countless deathly shipwrecks.

This dockworkers' lunch joint has been left leaning by a century of storm floods.

The architect of this fanciful complex called it an "oasis for humanity and nature in a sea of rational houses."

On the highest peak in the Harz Mountains, science and the occult faced off in a failed attempt to turn a goat into a boy.

The world's first and only three-segment bascule bridge folds up into the shape of a capital "N" to let boat traffic through.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

Twelve sweet, nutty, life-sized statues are housed in this second-story shrine to almond paste.

A modern museum dedicated to the fairytales and dictionary work of the Brothers Grimm.

The celebrated eyesore created by starry-eyed sweethearts.

An abstract monument to a symphonic composer.

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

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

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.

A little sculpture with a large wardrobe.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

This dazzling Buddhist temple was constructed from over one million ceramic tiles salvaged from a British shipwreck.

Bangkok celebrated its shifting monarchy with a militaristic homage to democracy.

For centuries young Thai men used this Giant Swing as a slingshot to heaven.

The headquarters of the Mahanikai school of Buddhism, Thailand's largest monastic order.

Ha Long Bay's "Cave of Surprises" houses a popular phallic rock formation.

Meant to be a lavish presidential home, the palace became a symbol of the fall of South Vietnam.