A small etching on the white marble parapet was written in runic script by a Viking mercenary.

This Cape Cod museum exhibits what it claims is the only authenticated pirate treasure in the world.

Everyone's favorite neighbor is remembered fondly in this small-town church.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

This World War II bunker now survives as a documentation of the Nazi regime and war crimes.

A surreal museum of extraordinary industrial objects.

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

The most visited, and possibly most controversial, museum in Germany.

Started as a kitchen garden, now the second largest botanical garden in the world.

A pocket of jungle amidst urban expansion in Panama.

This small and often-overlooked museum holds some of Spain's finest artistic treasures.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

An eerie collection of the surviving structures from a past celebration of the future.

The final resting place of the great navigator, or maybe his brother.

This massive library holds what was once the largest book collection in the world.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Outdoor escalators and art have helped change what was once a notoriously dangerous part of Medellín.

An unusual and beautiful form of mass transit serves the city's steepest neighborhoods.

The colonial city's social history is reflected in its fanciful door knockers.

In the middle of one of South America's most historic walled cities lies a bar with an enormous collection of Soviet memorabilia.

When the town wouldn't allow the fast-food behemoth to build a new restaurant, they put one inside an 1850 home.

This 19th century granite fortification is one of the most well preserved forts in New England.

This handsome giant is said to mark the birthplace of the mythical woodsman and even had a cameo in a Stephen King novel.

Play everything you see at a museum dedicated to a town's historic organ industry.