A restaurant and observation deck built in a unique broadcasting antenna.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

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

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Macabre astrological automaton clock dating to the late 1400s.

A little sculpture with a large wardrobe.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

The lost Latin words were reconstructed using the holes from the nails that once pinned them in place.

This ancient theater was once the home of fierce gladiatorial battles.

A bit of retro transportation flair preserved in the world's largest department store.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

The "Seinfeld" diner.

This enormous "cloth of the conquest" depicts the Norman invasion of England in mind-blowing detail.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

Historic medieval fortified city in southwest France.

Natural history museum celebrating biodiversity with a parade of taxidermy animals.

This museum houses an imposing skeleton army comprised of creatures great and small.

France's national museum of scientific and industrial instruments.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.