Thousands of narrow alleyways in an ancient medieval city make up what's believed to be the world's largest car-free urban zone.

A fortified city, home to a remaining population of five families

The other side is actually green.

Mosaics, storks, and brothels—this ancient city has it all.

One of the most spectacular canyons in the world.

Morocco's Argania trees are infested with nut-hungry goats.

Canada's largest dinosaur skeleton was hidden away in storage for more than 40 years.

An abandoned 1970s theme park that has been turned into a space for waterfront walking.

A museum in the building where Nazi Germany signed its surrender tells the story of World War II from the Soviet perspective.

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

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

One of downtown Berlin's last reminders of its Communist past.

Berlin's old airport.

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.

Its collection includes a broad array of social, geographic, graphic design, and political history.

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

The majority of the museum's large collection is held in a storage space open to the public a few times a year.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

CDMX's home for the world's culinary delights.

A palatial former bank building now houses what may be the poshest art venue (and former Tesco) in Belfast.

A network of bells in the pubs and restaurants around Westminster alerts politicians when it's time to cast their votes.