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

The Grand Canyon of Texas.

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

A 24-hour vending machine restocked daily with homemade full-sized pecan pies.

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

Belly up to the bar in Cowtown, don't forget to buy some boots.

A modernist landscape of water and sci-fi concrete.

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

This downtown Dallas art installation is always on the lookout.

A trio of colossal statues spread across a Dallas neighborhood chart the emergence of a giant robot born of a locomotive and spilled gin.

Free public park and gardens filled with peacocks and peahens.

This failed condo development was reborn as a street art hub.

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

A beautiful 62-acre Catholic shrine and botanical garden.

On the Oregon coast there is a natural hole that seems to be draining the sea.

This (occupied) house is 10 feet wide and full of spite.

This Oakland fairytale kingdom, fiercely devoted to childlike whimsy, was an early inspiration for Disneyland.

This Pringle-shaped ledge makes for the perfect photo op.

An amazing collection of fantastic reptiles, amphibians, spiders, and insects.

Sunset-colored dunes of volcanic ash make taking a poor photo impossible.

Come crisp December nights, this fairly plain neighborhood becomes a holiday dream world.

Coastal dunes, site of buried Egyptian movie set and former utopian colony.

A volcanic tunnel illuminated by natural skylights offers a shaded respite from the desert sun.

The ruins of the castle that chemicals built.