Craggy concrete faces are hidden in the walls of this artificial cave along the San Antonio River.

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

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

Minimalist modern art on a repurposed military base in rural Texas.

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

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

This big empty pig is a nostalgic throwback to mid-20th-century Texas barbecue.

These boots are made for selfies.

A gorgeous garden oasis with winding paths, stone bridges, and a troubling history.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

A spring-fed pool so deep it's used for scuba diving as well as swimming.

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

A clear blue swimming hole with hidden caves, still unexplored.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

The oldest continuously occupied public building in the United States.

Museum mostly in name, and only a restaurant depending on the day, this place could only exist in Marfa.

A little stop along the Texas highway where Rock Hudson, Elizabeth Taylor, and James Dean stayed while shooting the 1955 film "Giant."

This old abandoned sign flickers to announce a motel that isn't even there.

Mysterious glowing orbs float through the desert night.

Elevated freight railway turned wildly successful urban park.

A natural formation that resembles a camel resting in the New Mexico desert.