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

This Tuscan lake hides a 13th century town that is still visible when the water recedes.

Built at the turn of the 20th century, using bricks made and fired from clay found on the property.

A sculpture for the sun and stars, created by Nancy Holt.

This geothermal hot spring hides beneath a slowly growing mineral dome.

Thousands of acres of beautiful wild landscape in the Great Basin.

Formerly frequented by Hollywood stars and now open for tours.

The site of an underground detonation of a megaton nuclear bomb in the middle of the Mojave Desert.

This arid landscape was once a lush wetland. Today, it's a paleontological site filled with fossilized mammoths, sabertooth cats, and more.

An eatery for UFO seekers on the Extraterrestrial Highway.

A blacklight mini-golf fever dream pays tribute to the iconic rock band.