Take afternoon tea in a 17th-century almshouse.

Relive a Polish uprising via an enormous, century-old cyclorama.

A mysterious concrete hand reaches out from between the stones of Uniwersytecki bridge.

A fairytale Gothic castle steeped in Nazi treasure conspiracy theories.

In the center of Wrocław's old meat market stands a somber tribute to the city's livestock.

A collection of old neon signs from all over Poland line a secluded courtyard.

The silly symbol for an underground protest group is now scattered around the city.

A 15th-century former coaching inn forms the implausibly grand entrance to a 1980s shopping mall.

The oldest inn in England served brew to the crusaders.

In the heart of Tirana, this underground nuclear bunker has been transformed into a museum.

Gigantic water vessel, permanently grounded in Southern Albania.

Hundreds of thousands of concrete bunkers crowd Albania long after the fall of Communism.

This ominous Albanian fortress houses tanks and downed planes as a reminder of their victories over Western imperialism.

This beautifully preserved Ottoman house is steeped in history.

A naturally beautiful, seemingly bottomless deep blue spring.

A scenic UNESCO site that doubles as a habitat for various forms of wildlife.

An Albanian monument to the Communism that nearly crushed the country is now a crumbling wreck.

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

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

The sculpture of the deceased cockatoo flops atop its personal plinth.

This knockout museum lies in a sleepy corner of London.

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

The narrow passages will challenge even the bravest driver.

Located more than 600 feet beneath sea level, this tunnel boasts the world's first undersea roundabout.