This sacred cavern, 400 feet deep, is home to millions of bats and an ancient burial ground.

Tracks near this Texas nature site were once thought to support the Creationist belief that man and dino coexisted.

A grove of colossal man-made flowers built to collect the sun's rays.

An enormous pink granite batholith, long attributed with spiritual powers by the Tonkawa Indians.

The summer home of the largest colony of bats in the world.

An abandoned quicksilver mining town surrounded by the Big Bend parks.

Mysterious glowing orbs float through the desert night.

A Prada store in the West Texas desert that is never open for business.

A recreated Stonehenge stands in a country field, complete with Easter Island moai heads standing as sentries.

This crumbling UFO is one of only a few remaining "moveable ski chalets" of its kind.

A gorgeous garden oasis with winding paths, stone bridges, and a troubling history.

The Grand Canyon of Texas.

The pit stop from "The Texas Chainsaw Massacre" now serves beef and pork barbecue, not people.

A popular swimming hole that hides one of America's most deadly diving spots.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

A sculpture made of 10 Cadillacs as a monument to the “Golden Age” of the American automobile.

A modernist landscape of water and sci-fi concrete.

This unique structure in suburban Austin is made up entirely of other people's castaways, and constantly changing.

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