At 11,500 feet in elevation, there is no toilet in the state closer to the sky than this one.

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

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.

A monument to the one-armed geologist who led the first documented expeditions through the Grand Canyon.

An homage to everyone's favorite prehistoric cartoon family.

A spiritual vortex among the red rocks in Sedona.

This small museum is dedicated to the study of coprolites, or fossilized poop.

Bootleggers ran booze beneath this building before (and after) Route 66 appeared beside it.

The final resting place of the businessman-turned-astronomer who helped discover Pluto stands near his observatory.

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

A planet-hunting astrograph built in the 1920s to seek out the so-called "Planet X" beyond Uranus.