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

Over 100 million years ago, beach-bound dinosaurs left permanent marks on San Antonio's landscape.

The wood bears a hidden love note carved by a young Johnny Cash.

This museum showcases the history and contributions of the U.S. Army to the medical industry, both on the battlefield and off.

This underwater old Texas hill town only resurfaces during harsh drought.

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

Civil War dumping ground for the bodies of terrorized Union sympathizers.

The second largest roadrunner in the world stands 11 feet tall in his West Texas town.

This historic Civil War church has survived over a century of racial turmoil but still stands as a reminder of the town's roots.

Witness to many historic moments in early Texas history.

"They died with their boots on."

A World War II officers' club features Old West murals painted by German POWs.

Campus tradition says couples who walk beneath this enormous oak will stay together forever.

A 19th century family buried their dead among the pines, beneath gravestones styled after ancient Scottish cairns.

A tall smoke stack and boarded-up buildings are all that's left of the pioneering plant.

Two massive and unstable sinkholes are yearning to unite, and their consummation could be catastrophic.

The 19th-century ruins hide deep in an overgrown forest.

The upstairs reading room is packed with millions of rare books, literary manuscripts, and historical treasures.

The tree is thought to be the oldest oak in Texas and was once crowned state champion for its monumental size.

A statue in the Texas town that proudly calls itself the killer bee capital of the world.