The three acre, 68 degree, spring fed pool in the middle of Zilker Park in Austin is a must see if traveling in the Austin area. It's a great place to cool off in the hot Texas summers and of course people watch. You never know who or what you might see here.
Tips and Info
The water is very cold, so go in the hottest part of the day. You will have to pay to park and pay to get in to swim. It's around $8 per adult for a resident/$3 for a non-resident. You can find more information HERE. NOTE: Barton Springs Pool is closed on Thursday for cleaning. It's a good idea to take a blanket or chairs, towels, SUNSCREEN, and a pool float or noodle.
Also, you can take a drink but only in a plastic resealable container with a screw top lid.
Barton Springs Salamander
I have seen people snorkeling and you might even see the famous Barton Springs Salamander. It's actually a federally protected habitat since the salamander is an endangered species. The little guys are about 1/2 to 3 inches long.
You can either swim in the deep end, jump off the diving board, or just hang out in the shallow end (where a pool noodle will come in handy). Be aware, this Austin municipal pool is actually topless. You won't see too many, but there will be the occasional topless ladies sunning on the grass...just so you're not surprised.
Barton Springs Pool is an Austin, Texas favorite and you should definitely check it out!