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

A collection of massive stacked rocks in Texas includes a snarky note on the benefits of modern technology.

The Grand Canyon of Texas.

This iron and wood Civil War city-ship was the first vessel to be sunk by an electrically detonated torpedo.

The petroleum industry brings you the joys of hydrocarbons and largest collection of antique oil rigs in the world.