Shelves covered in dozens of coffee bean varieties fill this North End institution.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.

A fascinating insight into daily life in the Eastern Bloc.

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.

A vinyl-lover's Shangri-La.

A giant Troll lurks under one of Seattle's oldest bridges.

The Denny Substation has been called "the coolest substation in the world" and sits in a densely populated Seattle neighborhood.

An old vending machine serves up unpredictable beverages from its seemingly magical insides.

A wall of chewing gum moonlights as collective art.

The first park built over a freeway is a brutalist masterwork.

A walk through the historic city center, under the streets of Seattle.

Elevated freight railway turned wildly successful urban park.

This foreboding medieval castle was twice besieged by barons rebelling against the English king.

This skewed English house has looked like it's going to fall over for centuries.

An ancient water supply dating back almost 500 years can still be found standing in East Sussex.

This 1920s Dutch barge is now a floating bookstore.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

A giant scrawl on the skyline of south London.

Climb to the top of this windmill for a scenic panorama and up-close look at wind energy production.

A large collection of steam engines, organs, and fairground attractions.