Thousands of Mexican Free-Tailed Bats soar around an abandoned storm drain at sunset each summer.

A former department store turned into a quirky restaurant.

A geological mystery on Camelback Mountain.

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

A self-built castle made by a mysterious man.

The remote resting place of a notorious Wild West outlaw whose death is shrouded in mystery.

The unusual burial monument of Arizona's first governor.

Come for the pizza, stay for a performance on the world's largest theater pipe organ.

Collection of vintage trailers double as hotel rooms.

A living snapshot of a different time in America is preserved and maintained by a community of volunteers.

Every Christmas, one Arizona city makes the most of its dry climate by creating an arid desert tannenbaum.

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

A $100,000 tumbleweed decorates an Arizona park and ride that got its priorities a bit tangled.

This curiosity shop contains a museum filled with bizarre, unique objects.

The Jewish section of the famous Boothill Graveyard was abandoned for nearly 100 years.

One of the world's largest telescopes, stares into the night sky with two huge mirrors.

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

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

Rusting dinosaurs frolic at the entrance to this roadside "snake sanctuary."

Limestone caves with spectacular showcase chambers.

Hidden on a cattle ranch in Arizona, this bookstore has been celebrating Southwest literature for more than 40 years.

At an isolated roadside rest area stands a monument marking where famous Western star Tom Mix died in 1940.

A stone pillar marking the location of the westernmost battle of the American Civil War only honors one side of the conflict.

A reproduction of earth's many biomes.