Metro station with a claim to rock n' roll fame.

Berlin's natural history museum houses the world's largest mounted dinosaur and the late beloved polar bear Knut.

Cold war icon and onetime "hole" in the iron curtain.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

An ancient Egyptian temple in the middle of Madrid, Spain.

This modest marker near Notre Dame identifies the very center of Paris.

Hear the quietest sound from across the dome.

One part local history, 99 parts gruesome haunted house.

The fairy tale castle of the “fairy-tale king,” this was also the inspiration for Disney’s “Sleeping Beauty.”

These bronze pamphlets remember a remarkable group of Germans who fearlessly opposed the Nazis in the very center of their power.

Apartment complexes built into huge repurposed natural gas tanks.

The Habsburgs' royal collections of art and wonders.

A Hungarian pharmacy museum with a box full of mummy powder.

Possibly the world's largest hourglass only needs to be reset every New Year's Eve.

Uh, pardon me, ma'am, but I couldn't help noticing that there's a Columbo statue in the middle of Budapest.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

A museum in the childhood house of a medical pioneer.

Nestled on the banks of a river in Nuremberg is a small museum that was once home of the city's official executioner.

This abandoned coliseum was intended to be a grand Nazi rallying ground before it was halted at the end of the war.

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.

With a history of slaughter, feast, and famine, remnants of the pork industry decorate this area--even its church.

The celebrated eyesore created by starry-eyed sweethearts.

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