The streets of a sleepy Spanish town proudly exhibit some of the world's finest graffiti.

This 700-year-old street food market features baby octopus and soy donuts.

Once an indicator of social class, the color blue has come to define this city on the edge of the Thar Desert.

The bones of some 7,000 soldiers killed in the historic Battle of Solferino are stored here.

A stunning, abandoned limestone quarry in southern Indiana provided the stone to erect the Empire State Building.

This large midwestern cavern features impressive rock formations and an underground waterfall.

17,400 lbs., 12 feet in diameter, and 29 years in the making.

Mine your own precious stones.

Giant busts of 42 U.S. presidents are sitting in a field in Virginia.

A historic London pub with prison cells in the cellar and a "spy room" on the second floor.

Housed in a century-old building, this museum's dedicated not just to soft drinks, but to the free enterprise system.

A single artist is behind these large-scale models made of hundreds of thousands of two-inch wooden matchsticks.

A wondrous old library overlooking the nation's capital.

This woodland architectural installation acts as a camera obscura for the heavens.

The great Danube river starts here.

A folly built to satisfy a gentleman's bet that he could drive his horses through the eye of a needle.

Once the supplier for noteworthy projects like the National Cathedral, this old brickworks now lies abandoned.

With over 340,000 artifacts and counting, there is something for everyone, often called the "Smithsonian of the West."

A single tree's 2,800 aerial roots give the appearance of a complete forest.

An Anglo-Saxon cross inscribed with possibly the oldest written work of English literature.

The 55-pound trichobezoar was removed from the stomach of a cow.

This jewel of an engine is one of Northern England's finest surviving legacies of the Industrial Revolution, even catching the eye of Henry Ford.

A nostalgic bibliographic gem.

Sleep in a climate-controlled plastic bubble for the night.