Chico and I stayed in San Antonio for a few days at Christmas time. We left there on December 30 and headed for the Big Bend area of West Texas. Respecting my “get off the interstate!” credo, I took US 10 all the way to Alpine. We took a pee break where the road crosses the Pecos River.
The Pecos River valley, at US 90.
Chico looks for “the spot.”
It just looks so darned “Western” to a New Englander.
After this stop, we continued on to Alpine and a very nice little renovated motor court called the Maverick Inn which is so dog friendly it practically deserves its own post.
Can I Bring the Dog? 
Fred and I and our wives spent a week in San Antonio a few years ago. We stayed at the Menger right across from the Alamo. Great city!