A tree bears footwear on the loneliest road in America.

An abandoned cyanide mill is now a haunting magnet for graffiti and illegal parties.

This Nevada lake holds its titular natural pyramid and, if the legends are true, a number of dangerous spirits.

This giant temperature attraction created some giant electric bills.

The now-abandoned tunnels were built for the transcontinental railroad on the route where the first wagon train entered California.

The unbelievably opulent home built for an infamous newspaperman.

Most famous work of one of Frank Lloyd Wright's sons.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

This weird abode has inspired everything from the "House On Haunted Hil" to a robot hunter's pad.

Left untouched since a double murder-suicide in the 1960s, Los Feliz murder mansion remains a neighborhood mystery.

Each year these high desert hills are absolutely covered with poppy flowers in a surreal show of nature.

This strange seaside tower got its name from a wealthy eccentric who would hide coins among its stones.

A hospital closed seemingly in the middle of operations, leaving behind fodder for horror films and ghost hunters.

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

This public square capitalized on a single Eagles reference to bring some life back to an Arizona town.

On the outskirts of a reborn ghost town, a decaying post office remembers the bad old days.

This historic national park is covered in the stunning ruins of red rock pueblos.

A spiritual vortex among the red rocks in Sedona.

A motel dedicated to Southwestern nostalgia.

A self-built castle made by a mysterious man.

A reproduction of earth's many biomes.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

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

A mistaken marker makes an erroneous claim along the historic Old Divide Road.