A century-old shot ball factory tower is open to the public once a year.

A portable, wooden replica (minus the hyphen) of Hamburg’s iconic crooked coffee shop.

The world's first clock to use set theory as a measure of time required the invention of a new light bulb just to maintain its obtuse measurements.

Art and a pun, all in one.

The final resting place of many of Germany's most famous communists.

An abandoned swimming pool decays on the outskirts of Berlin.

Visitors can explore the role of mysticism throughout the ages inside this interactive museum of magic.

The abandoned remains of this Victorian brewery hide crumbling bowling alleys and rusting industrial gear.

An eerie, derelict amusement park in Berlin.

Its humdrum facade only adds to its electrifying appeal: a rooftop with panoramic views of a shapeshifting metropolis.

A large visitor's complex and place of remembrance on the outskirts of the DMZ.

This human-made pond is part of a Korean palace complex first built in the 7th century.

The site of the last royal wedding in Korea.

The supreme shrine of the state.

A unique structure located on the grounds of one of five grand palaces that were built by the Joseon dynasty.

This tomb's name derives from a famous painting of a white horse found inside.

This Grade II Listed Building with an Art Nouveau façade once contained a unique print shop.

This tiny alleyway is now a shrine to a subculture riot between the mods and rockers.

One of Bristol's best-hidden gems has ties to Lord Byron, whence it became the nation's first reformatory school for girls.

The unusual clock on this 18th-century market building has an extra minute hand for "Bristol time."

Most of Britain's gold reserve was secretly stashed here after the start of World War II.

The name of this suspended sculpture is Latin for "high horse," which is exactly what it is.

This sculpture celebrates a boules tournament and the link between Leeds and its twin city Lille.

This sculpture of Edward of Woodstock is surrounded by eight Victorian lamp bearers.