Pilgrimage site for star-crossed lovers.

Go inside to really appreciate this 500-year-old technological masterpiece.

Five candy-colored villages on the Italian Riviera.

Jesus' footprints and the first catacombs in the world.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

The yawning maw of this pagan visage is said to bite off the hands of liars.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

The 1852 novel "Uncle Tom's Cabin" lends its name to a subway station, a street, and several shops on the edge of Berlin.

The last remnants of a massive medieval wall that once encompassed the city of Berlin.

Every hour the doors open to reenact the legend of the heroic mayor who saved his town by drinking a gallon of wine.

A Black Forest cuckoo clock theme park features one timepiece big enough to walk inside.

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

The prototype for all Nazi concentration camps.

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

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

Soaring over 6,000 feet in the Bavarian Alps, this beer garden was once Hitler's 50th birthday present.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

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

The fairy tale castle of the "fairy-tale king."

A monument to the thousands of Canadian soldiers who died capturing the French ridge during World War I.

A memorial to the nearly 10,000 American soldiers laid to rest on the beaches of Normandy during WWII.

The opulent home that inspired Tintin's Marlinspike Hall and the adventures within.

The world's tallest bridge is also possibly the most elegant.

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