The world's largest rotating world.

"Girl in a Wetsuit" is what happens when a sculptor has to find a way around a 100 year old copyright.

The ghostly remains of an accidental sea.

Iconic Los Angeles residence famous for its 19 statues of Michelangelo's David.

America's most famous piece of self-built architecture.

A mysterious castle built as a monument to lost love.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

Hear the quietest sound from across the dome.

The mummified heart of a saint lives on in this church—after a brief hiatus when it was stolen.

Giant Redwood-themed cafeteria operates under the golden rule, "Dine Free Unless Delighted."

Thousands of turbines whir at at the origin of North American wind power.

Traditional 11th-century outdoor tannery.

God's Saharan sandbox of wrath.

Vast stretch of tide-pools with a unique Moroccan charm.

Great place to have a drink and a bite to eat in an atmosphere laden with New York's Bohemian past.

Ship-sized kinetic sculptural fantasy.

Roman ruins top white travertine terraces formed by ancient hot springs.

Quirky castle designed by the American actor best known for portraying Sherlock Holmes on stage.

First LEED-certified gas station in the United States.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

World War II-era Nazi compound nestled in the Santa Monica hills.

A sprawling collection of over 106,000 toys from around the world.

Despite its lavish ornamentation, and wholesome lifestyle of its devotees, this mountain commune has faced its share of issues.