It was founded by Ralph Nader to educate the public about an often-maligned area of law.

This beautifully designed star-shaped fort was the premier defense system of the late 1500s.

Europe's largest natural bridge has a 19th century royal chateau built into its side.

A remote candy-striped mountain in the Peruvian Andes straight out of the pages of Dr. Seuss.

The largest cave chamber in Britain—big enough to fit a whole cathedral inside.

A cave dwelling that was started by the Celts, expanded by monks, and finished by knights.

This otherworldly French waterfall looks like its waters have turned to stone.

A towering baroque basilica jutting out of the French countryside.

1920's reinforced concrete church by architect Auguste Perret changes the face of modern design.

The world's most important buildings shrunk to a tiny size.

A quaint medieval millhouse hovers surprisingly above the waters of the Seine.

The 1936 Summer Olympics site is a crumbling remnant of sportsmanship and a history its host country would like to forget.

On the Oregon coast there is a natural hole that seems to be draining the sea.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

A pair of connected skyscrapers form this symbolic gateway.

This cubist Vienna church building looks like some sort of alien stonehenge.