A self-built castle made by a mysterious man.

An urban laboratory.

A giant knight, sex education, date shakes, and Jesus coexist happily in this Coachella Valley desert oasis.

Explore the wide world of desert plants at this unique Palm Springs botanical garden.

A museum celebrating the self-taught artist-environment builder.

Traversing these canyons, visitors can take in stunning views and glimpses of the region's history.

This was once the largest four-sided clock in the world (yes, even bigger than Big Ben).

Whimsical sculptures dot a woodland path surrounding their creator's old summer cottage.

An unassuming house in Wisconsin hides a transient artist’s magnum opus.

"World's largest scrap metal sculpture" stands in an outdoor sculpture garden in the middle of Wisconsin.

One Austrian's singular yard is now preserved as a folk art garden of concrete wonders.

A bizarre house filled with an astounding array of collections.

Giant telescope mirrors built in a spinning furnace under a college football stadium.

The Magical World of George Phar Legler.

A museum, art project, and institution that demands we look at the world around us in a strange new way.

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

The ghostly remains of an accidental sea.

"I did this all while you were watching TV."

Its history includes dinosaur fossils, cattle rustlers, Georgia O'Keeffe, and a mythical giant rattlesnake named Vivaron.

These aggressively sustainable art homes look like something out of 1970's science fiction.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

Once a dining hall for boarding school students, this lodge was a popular haunt for nuclear physicists working on the Manhattan Project.

An off-grid art installation that encourages its visitors to imagine a world without waste.

This abandoned Navy base was transformed into an off-grid alternative living community for thousands of people.