On a trail in Portugal's Barão de São João National Forest, a pile of faces look up at hikers from the forest floor.

Dedicated to the American general whose reply to a German demand for surrender was simply "Nuts!"

This century-old ruined temple was reborn as "The Church of Skate."

This 600-year-old home seems to defy physics.

Lebanese castle built by one man, over a lifetime.

Part modern art project, part traditional chapel, this see-through church is only substantial from the right angle.

An intricate and amazing house built by architect Karl Junker.

A recreated Stonehenge stands in a country field, complete with Easter Island moai heads standing as sentries.

The giant scales in this museum can still tell if someone is one of the devil's brides just by weight.

Once standing on solid ground, this slender beacon is a victim of the very shoreline it was charged with announcing.

Once known throughout Europe, this tiny and unusually progressive 18th century micro-nation within Lithuania now lies in ruins.

Built to ward off Napoleon's army, this city-sized abandoned Russian fort is now perfect for urban exploration.