Outsider Art Community.

A Wild West jailhouse that slid down the mountainside.

Opinions differ as to whether this Arizona tree was actually used as a Wild West jail, but that hasn't stopped the town from capitalizing on it.

The largest natural travertine bridge in the world is nestled in a small canyon in central Arizona.

Once a year, at exactly 11:11 a.m., this monument comes to life.

This abandoned horse racing track was an exercise in hubris from its inception.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

A geological mystery on Camelback Mountain.

In this small Phoenix taxidermy emporium, you can find everything from a squid in a jar to a freeze-dried toad.

A pink cottage covered in hearts served as a haven and a resting place for LGBTQ activists.

This collection of Wild West movie memorabilia also claims to hold some secrets of the Lost Dutchman's mine.

A self-built castle made by a mysterious man.

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

The world's largest rose bush has literally outgrown the pioneer museum it was planted behind.

Stairs often replace streets on the steep slopes of this old mining town.

What is the Thing?

A unique attraction and museum dedicated to exploring iconic roadside structures.

Miniature art that tells an enormous story.

The Magical World of George Phar Legler.

An Iron Age fort on the edge of a seaside cliff offers a glimpse into an ancient, mystical world.

An astounding collection of medical specimens, including bits of President Lincoln.

A girls' boarding school inspired by the Chicago World's Fair, once abandoned, now restored to strange and scenic glory.

A Civil War fort in the middle of Washington, D.C. has been swallowed by a forest.

Giant acorn-shaped 19th century gazebo from which suburban Washingtonians gazed upon the original "silver" spring.