These free-roaming horses were once destined to disappear from the land.

Limestone caves with spectacular showcase chambers.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

The highest point in Texas is capped by a big silver pyramid.

Steep canyon walls hide a forested oasis in the West Texas desert.

A cave's rare beauty held a cavernous secret hidden underground.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Known as one of America's most beautiful public restrooms.

Travel through the hidden underbelly of the city in colorful tunnels filled with art and history exhibits.

High-end dining has a home in this former gas station.