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

There is an unmarked red button hidden over Houston's Buffalo Bayou that is just begging to pushed...

The world's largest squirrel statue clutches a pecan bigger than your head.

A registered historic landmark shrouded in unsettling local legends.

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

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

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

Free public park and gardens filled with peacocks and peahens.

A medieval castle in the middle of rural Texas.

A taste of Middle Earth, in the middle of the Bayou City.

The Grand Canyon of Texas.

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

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

A modernist landscape of water and sci-fi concrete.

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

Continuing the tradition of the dime museum in style.

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

The warmest cave in the Ozarks features two seemingly bottomless lakes.

Two gushing waterfalls of hot spring water within a block of each other.

Yup, that's where the name came from.

The highest waterfall between the Rockies and the Appalachian Mountains.

This mill has survived a tumultuous past to still produce flour and cornmeal.

The largest spring in Northwest Arkansas is also home to a sprawling botanical gardens and a historically significant bluff.

There are no bodies inside these stone coffins. And there never were.