It's big, it's a ball, and it's made of twine—the world's largest of its kind.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

The most loyal of little dogs, or a Victorian era publicity stunt?

The final resting place of soldiers' loyal canine companions.

A six-ton wedding present for the King of the Scots.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

Protecting the dead from opportunistic body snatchers.

It houses the remains of a 17th-century version of the Titanic.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

The world's largest wooden structure.

Two stunning 17th-century libraries and a cabinet of curiosities.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

Baroque celebration of the end of the Great Plague of Vienna.

Macabre astrological automaton clock dating to the late 1400s.

The topiary maze at the Habsburg hunting lodge.

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

Lone survivor from Custer's Last Stand forever preserved.

A piece of John the Baptist in the American heartland.

Four, 18-foot-tall badminton shuttlecocks lie scattered about the lawn of a Kansas City museum.

Community bookshelf of 25-foot-tall book spines.

The United States's largest hand-dug well is topped with a state-of-the-art museum.