I've been to basically every single place on this map, which I just stumbled across while looking for something completely different. Highlights if you're ever in the area: Enchanted Rock, Fredericksburg, Pedernales Falls, the Guadalupe River and Schlitterbahn, Natural Bridge Caverns. Lowlights: Kerrville.
And don't forget to come during bluebonnet season.
Grew up in Boerne, so this is pretty much my life in a map. I'm actually kinda freaked out seeing this on Hubski. This entire region sees triple digit high temperatures for many days a year, hence the emphasis given to all bodies of water. Another lowlight - Cascade Caverns. Trust me, I worked there as a tour guide about a decade ago.
For perspective, Bend, Texas -- way up at the top -- is about 150 miles from San Antonio, or 200 from Uvalde. And incidentally Bend is just around the corner from the wonderful Colorado Bend State Park, which isn't noted but should be. 
I've camped at Colorado Bend State Park before, during a spring when there had been plenty of rain. It was like a dreamworld.
I almost made Eagle, just needed 2 or 3 more merit badges and my project. Then I found out about girls, and got on drumline. So that was that. Still, I probably logged over 100 nights of camping back in the day, between Cub and Boy Scouts, and family trips. Don't get me wrong, the Boy Scouts have terrible tolerance issues and turn a blind eye to hazing (HAVE YOU EVER BEEN SNIPE HUNTING??), but it was usually pretty good fun, and I learned more than other kids who just played Mario Kart 64 every weekend. Plus there was that one time that three of us snuck out of Freeze-O-Ree in the dead of night to hike 5 miles to the Girl Scout camp down the road, only to find that they don't hold events in mid-January.
Growing up, I had a 3D perspective map of Northern New Mexico, presented by Coors, highlighting all the ski areas. It was impressive - about 72" by 48", printed on 1/4" fiberboard. It's still in the room I called mine back at my dad's house. It was printed in the early '80s. By the time I got ahold of it, maybe '86, maybe '87, half the ski areas were out of business. Half again are gone now.