Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Vibrant street art created with mixed media.

This massive fiberglass Gulliver turns every visitor into a Lilliputian.

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

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

This water-tower-turned-high-end-apartment building was once the site of an early Nazi concentration camp.

A 12th-century fortress containing some of Berlin's oldest buildings.

From Iggy Pop to David Bowie to Nick Cave, this regal music studio has served some of the all time greats.

Berlin's old airport.

Blitzkrieg bop your way through Berlin's Ramones Museum.

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

A fascinating insight into daily life in the Eastern Bloc.

A museum dedicated to a Cold War era sausage.

An old department store turned Nazi prison turned artist commune.

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

A 19th-century politician who died after walking home in a blizzard is honored with this Manhattan statue.

The front yard of an Upper East Side town house hides the last fragment of one of New York's most famous theatres.

Rat sculptures try to infiltrate the Graybar Building in an architectural tribute to New York City's nautical history.

The smallest island in Manhattan is a manmade landfill dominated by a Buddhist peace arch.

A strangely angled West Village home is the only monument to an explosion that took the lives of three American revolutionaries.

There must be a pun in this haystack somewhere...

Down a stairway in the East Village, you could once read a plaque describing an alternate history of a fictional version of Manhattan.

The most confusing clock in New York.

Salute the leader of the proletariat.