Bronzes and busts that once stood in the city's main squares are now relegated to a small hidden courtyard.

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

Started as a kitchen garden, now the second largest botanical garden in the world.

This memorial to World War II's fallen airmen shows us the movements of the stars that once guided them.

This narrow Ghent alleyway is an officially sanctioned street art tunnel.

This natural hill rose another 130 feet from the debris and rubble added after World War II.

The remains of three Luftwaffe launch pads designed for manned anti-aircraft missiles.

An Austrian house of bones filled with hundreds of intricately painted skulls.

Trick water gardens from 1619 featuring a 200 piece mechanical theater powered by water.

A giant snail sculpture looking longingly at the German traffic museum.

The footprint of a frustrated devil in Munich's Cathedral.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

The unsettling remnants of a torn down movie set lies nearby the ruined location of the actual Płaszów Labor Camp.

These 18th-century paintings of Warsaw were used to reconstruct the city after World War II.

This insurance company building reminds customers that witches, bears, and gnomes are out there, best be insured.

A collection of collections ranging from dentistry to minerals.

A subterranean house of worship carved right out of the bedrock.

A lovingly curated curio shop in which the taxidermy wear newspaper party hats, and peanut shells are spread across every surface.

Elegant marble and old vaults fill this historic Dutch bank turned office space.