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

Abandoned railroad tunnel is home to a colony of three million Mexican free-tail bats.

Twenty churches beautifully painted by 19th-century Czech and German immigrants in Texas.

One of the highest points in Bexar county offers birdseye views of San Antonio and a four-story stone tower.

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

One nutty businessman’s unique tribute to an ancient tool.

An immense cave that has served as an outlaw's treasure trove, an underground dance hall, a nuclear fallout shelter, and much more.

The saga of the massive nut begins and ends in Texas.

Texas's oldest bakery serves authentic German pastries, including legendary strudel.

A fruit-loving town welcomes visitors with a giant melon set against the sky.

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

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.

This gas station offers wine tastings and craft beer.

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

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

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

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

Home to an endangered salamander, a full moon celebration, and a large spring-fed outdoor swimming pool.

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

Continuing the tradition of the dime museum in style.

Locals dubbed it the "Owl Building" because of its bird-like appearance.

Kay Andrews's recipe was so good, her family immortalized it in stone.

Home to a timed geyser created by complete accident.