The engineering is fascinating. The river walk itself is hardly worth the trip.
It’s a pleasant spot. Texas is dry and hot as a rule, but the river walk is a level below the city, right at the water’s edge, with trees providing ample shade for the whole length. If you are visiting San Antonio you will definitely want to eat lunch there so that you can be in the shade during the hottest part of the day. But is it special enough to make it worth a trip to San Antonio just to see the it? No, probab…
Brownsville and Houston would like a word… (Texas is a huge state and coastal Texas is not dry.)