A former major munitions plant that has been converted into a sprawling art space.

The 72-foot giant escaped confinement in a large patch of mulch only to be reburied in the sandy shores of the Potomac River.

This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

America's first federal monument.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

The curious underground history of keeping Paris clean.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

This demon atop the Notre-Dame de Paris looks utterly bored.

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

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

A favorite with sightseers, this Norwegian funicular provides easy access to a stunning view of Bergen and its environs.

Horrifically creative torture devices and shame punishments line the walls of this chilling museum.

Every hour the doors open to reenact the legend of the heroic mayor who saved his town by drinking a gallon of wine.

This "floating railway" is one of the world's oldest monorail systems.

World's largest barrel containing an inn.

A Faraday Cage protects cars from a nearby high-power transmitter.

This tremendous timepiece was once the largest cuckoo clock in the world.

A historic casino where Dostoyevsky is said to have lost it all on a single spin of the roulette wheel.

There has been an astronomical clock on this spot since the 14th century.

The world's largest second-hand graces a clock surrounded by constantly changing flower beds. 

Whitewashed mosque contains the world's largest carpet.

On any given day this sprawling market houses literally tons of government-regulated gold, gems, and precious metals.

Sacred waters rescued from the wrath of a volcano.

Bali's remote "gateway to heaven" is one of the most sacred places on the island.