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

An undulating wicker beast looms peacefully atop a sand dune in Belgium.

Dutch woodpile home in the forest.

Cat art as far as the eye can see.

This 1920s Amsterdam neighborhood was built as a giant experiment in concrete construction.

Long abandoned underground complex to keep royals safe from a nuclear war that never came.

The world's largest collection of ticks.

Most-visited and most-photographed slot canyon in the American Southwest.

This Oregon farm is dedicated to teaching people the professional art of tree climbing.

This giant Massachusetts sycamore is said to hold the dubious distinction of being the "widest tree East of the Mississippi!"

Antique gaffe kept in the basement of a small Vermont natural history museum.

Locals purchased this abandoned quarry in order to make sure it continues to be overgrown.

The building that inspired Shirley Jackson's "The Haunting of Hill House."

This locally-famous crevasse in New York State is icy all year round.