A sculptor's dream castle turned fantastical ruin.

A cluttered and astounding collection of antiquities and curiosities.

This 16th-century monastery has been turned into a surrealist architecture compound.

Big gun installations, built over a massive cemetery, now abandoned & hidden in trees.

No one knows how this Pacific Northwest spruce tree came to have so many trunks.

Skeletons dressed in extravagant 18th century royal costumes cavort in the aisles of this German basilica.

Catacombs turned marketplace.

The longest living non-clonal organisms on Earth.

California's own medieval Italian castle, authentic down to the 300-year-old iron maiden in the dungeon.

An extraordinary mixture of natural beauty and man-made phenomena.

Natural time capsule containing an alien ecosystem.

Giant busts of 42 U.S. presidents are sitting in a field in Virginia.

Remnants of a Victorian garden feature sitting in public woodland.

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

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

Climb right into the heart of this colorful Iceland volcano.

A historic house left in "dramatic still life."

This elegant arc of a waterfall marks a religious turning point.

Peek through a transparent pyramid and drink in the mountain made of books.

New Orleans' famous cemetery, located on the site of a former race track.

Australian Lake set aglow by Noctiluca Scintillans.

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

An abandoned village that doubled as "The Hunger Games"' post-apocalyptic wasteland is up for grabs.

The largest drain hole in the world.