San Antonio Zoo has an area called the Tiny Tot Nature Spot. You can find it about halfway through the zoo. It's an awesome, cool down spot with restrooms and a nursing mothers room.
It gets pretty hot outside the zoo so breastfeeding openly in the Texas heat is a little uncomfortable.
This nursing room is air conditioned and has more than one padded comfortable rocking chairs, so more than one mom can nurse at a time.
Also the door can be locked while you nurse to prevent unexpected entry.
#bfus