A Texas cave network is home to some of the world's most spectacular-looking and bizarrely named mineral formations.

It specializes in outsider art and artifacts of secret societies.

A private collection of massive steel monsters guarding a Texas pipe works.

At the "Garage Mahal" in Houston, car culture is about more than just driving.

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

A former electrical substation is now home to an eccentric junk art masterpiece.

A master plumber has turned his love of art and toilets into a folk museum that's not taking the piss.

Housed in a century-old building, this museum's dedicated not just to soft drinks, but to the free enterprise system.

Visitors can walk over the largest concentration of Columbian mammoths to have died from one event.

Free public park and gardens filled with peacocks and peahens.

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

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

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

A 90-year-old underground water reservoir offers a more industrial kind of tranquility.

Mysterious glowing orbs float through the desert night.

A Texas-sized particle collider that was abandoned due to its Texas-sized budget.

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

DIY collection of eclectic holdings.

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

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

One part antique store, one part curiosities hodge-podge.

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.