Towering basalt columns, a creation of fire and ice.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

A small "palace" and museum made of, and devoted entirely, to salt.

A classically inspired temple in Redwood City.

An underground mansion with fruit-bearing trees and grapes growing beneath the surface of central California.

An outlandish shoe shaped house built by an eccentric millionaire.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

Abandoned concert venue legendary for its rock counterculture.

A modernist landscape of water and sci-fi concrete.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

Not to be confused with the iconic New York City skyscraper, this Chicago building is a vibrant hub for artists.

An overlooked and unassuming engineering marvel.

America's most famous piece of self-built architecture.

A six-story-tall golden pyramid, surrounded by a moat.

A hand-built folk art installation covered with messages of God's love.

A storybook European village in Berkeley.

Witness to many historic moments in early Texas history.

Decaying military base deactivated in the 70s is now visited by urban explorers and military enthusiasts.

The Magical World of George Phar Legler.

Remnants of a Victorian garden feature sitting in public woodland.

Beer lover's can-covered house.

San Diego's most historic and haunted home.

Crumbling hotel echoes with the sounds of the '30s.

Ruins of a once-opulent grand Victorian resort.