Ancient human, animal, and geometric figures drawn in the earth.

The Hopi-style structure was built by the man who discovered Desert Hot Springs' famous mineral water.

Explore 10 acres of environmental sculptures.

The unusual burial monument of Arizona's first governor.

A self-built castle made by a mysterious man.

A mysterious "wedding cake" castle in the middle of the urban desert.

A geological mystery on Camelback Mountain.

Originally conceived as part of a proposed Arizona State Capitol building in the 1950s, this structure built in 2004 stands as a monument to the architect's legacy.

Locals dubbed it the "Owl Building" because of its bird-like appearance.

This small stone building, the final work of a renowned artist, offers a peaceful environment with radiant, colorful glass windows .

The upstairs reading room is packed with millions of rare books, literary manuscripts, and historical treasures.

A giant donut stands as a popular symbol of Los Angeles iconography.

This museum honors the first Spanish land grant in California which is still in the hands of the original owner's family.

This unique structure in suburban Austin is made up entirely of other people's castaways, and constantly changing.

This failed condo development was reborn as a street art hub.

This simple frog painting created by musician Daniel Johnston embodies the spirit of Austin.

An expansive book store, art gallery, and curio shop with wares ranging from tarot cards to novelty socks.

An unfortunate geological resemblance to Satan has labeled this Pasadena gorge as a passage to the underworld.

The world's first disc golf course has the Jet Propulsion Laboratory as a neighbor.

NASA's leading space science lab started by a co-founder with deep ties to the occult.

Hiding amid the largest camellia collection in the country lies a charming children's maze, donated by a secret admirer.

The cobbled together compound of a deceased artist which now serves as a filming location.

This California estate was either haunted by ghosts or the Marx brothers.

This former stomping grounds of the most eminent astronomers of the early 20th century.