The home of president Truman during the Potsdam Conference, and the place from which the atomic bomb strike on Japan was triggered.

A memorial commemorating the place where Truman gave the order to deploy the first nuclear bombs on Japan.

This stone angel is one of the biggest caryatids in all of Paris.

Hidden tunnels have sheltered the people of a Czech town for centuries.

This historic bridge connects Whidbey Island to Fidalgo Island across whirlpool-filled waters.

This moving sculpture depicts contortionist positions based on photographs of gymnast Věra Čáslavská, who protested the Soviet invasion of Czechoslovakia.

The most peculiar part of Berlin's public transit network is an on-demand rowboat.

Ever-changing museum dedicated to graffiti and contemporary street art.

This painted Lego bridge is the product of over a century of locomotive history.

The first recognized Neanderthal remains were found in this now-lost cave in 1856.

This "floating railway" is one of the world's oldest monorail systems.

A construction mishap at this narrows on the Fraser River rendered it impassable to many migrating fish species, with international consequences.

Largest illuminated advertisement sign in the world.

The ruined remains of the airport Claus von Stauffenberg departed in his failed attempt to kill Adolf Hitler.

Founded in 1961, this comic shop is said to be the oldest in the world.

An 18-panel Soviet mosaic showcasing the scientific advances made under socialism.

A metal forest of peas pays tribute to the founding father of genetics.

The metal-free wooden towers of Brück.

The world's first funicular powered by a steam engine.

A pillar is all that remains of a church built to honor a peculiar miracle.

This buzzy, award-winning building hovers 85 feet above the ground on a dozen colorful stilts.

This obscene artwork on the side of a newspaper office pokes fun at a rival paper's former editor-in-chief.

According to a satirical conspiracy theory that persists today, this German city of 300,000 is a hoax invented by the CIA.

Twisted buildings adorn the banks of the Rhine river.