17th century mosque for Shah Abbas' harem.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

Centuries of crashing waves carved out this small hole in the rock, which lights up at certain parts of the year.

This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.

This stretch of beach along California's central coast is a busy highway for the largest seal in the northern hemisphere.

This giant temperature attraction created some giant electric bills.

Brightly colored 30-foot-tall totems light up the desert sky just outside Las Vegas.

Local lore holds that Butch Cassidy took an escape route through Red Canyon's sandstone hoodoos after an attempted murder.

The notorious Wild West outlaw was raised in this unassuming abode.

Erosion and various mineral deposits give this striking canyon its distinct color and soft appearance.

The unusual patterns in this rock formation result from two distinct modes of weathering.

A tunnel with windows, so you don't miss out on the impressive views.

The fifth-longest natural arch in the world, and the longest outside China.

An emerald-green grotto just a short trip from Austin.

Home to an endangered salamander, a full moon celebration, and a large spring-fed outdoor swimming pool.

A free, canine-friendly alternative watering hole near the more famous Barton Springs.

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

A spiritual vortex among the red rocks in Sedona.

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

A cult following celebrates the legend that belies this curious podiatrists' office sign which has worked its way into song, literature, animation, and the visual arts.

A modern day curiosity cabinet.

This California eatery has made a name for itself by embracing Asia's rich history of eating bugs.

This well-traveled chess park offers scenic views of the pacific and a colorful, eclectic clientele.

A treasure hunter's tiny bar, harboring celebrities since 1959.