Public opinion is still divided on this enormous sculpture in front of Baltimore's Penn Station.

Two thousand artifacts from around the world collected by one woman who loved to travel.

This exquisite, alienesque piece of Soviet architecture is being threatened by modern shopping malls.

The haunting complex honors the millions of Ukrainians who died in the forced famine under Soviet rule.

The deepest metro station in the world.

When you've got to go, you've got to go.

One of the largest museums in Ukraine remembers the story of the German-Soviet War in iconic, brutalist style.

340-foot statue built to honour the Heroes of the Soviet Union.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

Sit where JFK proposed to Jackie or where Nixon dined on meatloaf at this storied pub.

While most wind tunnels test scale models, the "Cave of Winds" was large enough for actual airplanes.

When it comes to handsignals (and colonialism) rock always beats scissors.

Look closely and you’ll notice that the color changes a third of the way up the tower.

A traveling postal dog covered 48 states and more than 140,000 miles, and he lives on as taxidermy, patched up with a rabbit's foot and a pig's ear.

The most decorated dog of World War I is preserved in the Smithsonian.

The first purpose-built art gallery in the United States is once again open as a center of craft arts.

The walls of the iconic dome are hollow and have a secret stairway.

There’s a hidden military meme engraved on the World War II Memorial.

The site of the climactic scene from the classic horror film is now a historic landmark.

This futuristic German television spire is actually the world's largest digital clock.

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

A musical instrument played by the sea.

Now harmless, this looming post struck fear into the heart of medieval troublemakers.

This temple to the sturm and drang of Richard Wagner contains a dragon's cave and reptile zoo full of living "dragons."