A couple turned their front yard into an artistic masterpiece.

The last slot car racing arcade in Brooklyn is keeping the dream of speedy little autos alive.

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

America's oldest archaeological site or a muddled case of wishful thinking.

Exact replica of the ancient monument, but much, much lighter.

A rocky sea serpent hides caves, blowholes, and a spectacular natural bridge.

The risqué mixed-media sculptures are supposedly a metaphor for Czech politics.

This replica of the Greek structure is in the heart of Nashville.

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

A French chateau, failed utopian community, odd museum, and Stonehenge replica in rural Washington State.

A futuristic temple of light uses prisms and rainbows to create an atmosphere of peace.

Sitting on an Italian hilltop is this surreal fortress built by the mad inventor of electrohomeopathy.

This floating garden in the sky is straight out of a fairy tale, but the real thing is nothing short of magical.

The remains of Crystal Palace Great Exhibition of 1851.

Houses are tucked between, on, and underneath giant boulders.

The ancient tomb acts as a calendar that keeps perfect time.

Indents in the pavement are all that remain from a grisly death machine in Paris.

This Irish show cave is said to have been the site of a Viking massacre that claimed 1,000 lives.

Ruins of the elaborate house where the enigmatic costume designer threw glamorous parties for New York's theatrical elite.

The middle finger of modernity.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

The longest hedge maze in the world.