HAMILTON POOL PRESERVE, TEXAS

Not that you need any other reason to visit this great state, but one of the most stunning pools in the lower part of the country is located 23 miles west of Austin.

Hamilton Pool Preserve results from when a limestone dome collapsed over an underground river a few thousand years ago.

Travelers familiar with Mexican cenotes will recognize the geological rarity instantly. It’s one of the most accessible swimming holes to reach on our list, and even though that pretty much guarantees you’ll have lots of company if you go there, it’s still well worth the drive.