This 1920s Amsterdam neighborhood was built as a giant experiment in concrete construction.

This grand gothic brewery has been pumping out suds for over a hundred years.

Home to items never before seen by the public.

The United States Capitol's former columns still stand.

Scattered throughout London are ancient remnants of the city's former bounding wall.

Repository for more than 22 million pickled specimens.

London's smallest police station is barely the size of a phone booth.

Eighty million natural history specimens call this gargantuan museum home.

A historic house left in "dramatic still life."

Several plaster noses are hidden in plain sight around London's Soho neighborhood.

Hidden beneath the streets of London is a secret subway that only carried mail.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

Go inside a revolutionary, cage-less zoo where 70 species of monkeys roam free alongside their human visitors.

The place where Czar Peter I of Russia resided in 1697 during his Grand Embassy.

A Dutch clog company in the town of Zaandam loves the wooden shoes so much it made a museum for them.

A miniature city, once ruled by the Queen of the Netherlands.

You would never come across this tiny green oasis if you didn't know it existed.

A beer pipeline runs beneath Bruges.

A little sculpture with a large wardrobe.

Cozy basement bar sports an inventory of over 2,000 beers.

Berlin's old airport.

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.