The most visited, and possibly most controversial, museum in Germany.

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

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

A pair of connected skyscrapers form this symbolic gateway.

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

A towering spire in the fortress of Kalemegdan honors the victorious armies of Serbia during their struggles against the Ottoman Empire.

Bizarrely shaped rock formations in northwest Bulgaria come with equally bizarre legends.

The second-largest Jewish temple in Bulgaria was deserted after World War II, seized by the communist government and then abandoned again.

A Roman monument to their own civil engineering prowess.

A giant portrait of an ancient king looms over the river.

This 14th century castle withstood years of battle but is now sliding off the hills into the Danube.

The massive, original Colgate Clock is mounted on a defunct factory building that was once a prison.

A turn-of-the-century architectural marvel built on healing mineral springs and salt licks.

Known as the "Cross At The Crossroads," this massive metal cross is just short enough to avoid the FAA.

The world's largest collection of the world's largest objects is in one small Illinois town.

Picnic on the seashore in the footsteps of ancient kings, protected by giant mythical cat beasts.

The painted and decorated towers of this Hindu shrine were once the tallest structures in one of the oldest cities in India.

This tunnel entrance is built to resemble a grand castle but no one is quite sure why.

England's oldest surviving hedge maze has been confusing visitors for over 300 years.

Art Deco and “Wrenaissance” mash-up, this recently restored royal residence has been home to kings and comes with secret monkey passages included.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

Eighty million natural history specimens call this gargantuan museum home.

The Columbia Road Flower Market is now open every Sunday, rain or shine.

This intricately carved and hilariously huge bed was such a famous symbol both Shakespeare and Byron used it in their writing.