An entire subdivision was accidentally built on a flood plain, resulting in its eventual demolition—but the streets are still there.

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

This eclectic Austin curiosity shop is home to all things strange and unusual.

Continuing the tradition of the dime museum in style.

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

A modernist landscape of water and sci-fi concrete.

This beautiful grotto is one of those places where you can't believe you're just outside Austin.

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

A massive collection of rare and antique books in a tiny ranching community in northern Texas.

This Texas home and garden was the masterpiece of a British portrait painter.

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

Crumbling hotel echoes with the sounds of the '30s.

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

The bridge continues the legacy of President Franklin D. Roosevelt's New Deal policy.

The end of times arrives, at least for the fish in the O.C. Fisher Reservoir.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

All of the 20 occupied houses in this mostly abandoned town feature some curious display of junk art.

Trails through lava-carved tube-caves display sparkling bacteria and a rich history.

In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

At this gas station in the middle of the desert, a convenience store has been carved directly into the rock.

A gothic palace of endless stalagmites and pseudoscorpions waits within one of the world's most beautiful caves.

This sculpture garden in Death Valley makes you feel like you've slipped into some alternate reality.

Come for the speed, leave in love with the desert.

An Antoni Gaudí masterpiece in Astorga.