Things to see in San Antonio besides the riverwalk

All the above are great. I would also suggest a free presentation called THE SAGA. It is shown on Tuesday, Friday, Saturday and Sunday at 9pm, 9:30pm and 10pm. Played on the facade of the San Fernando Cathedral in downtown San Antonio, this laser music video presentation chronicles the history, culture and uniqueness of the city dating back to it's native inhabitants up to present day. You'll marvel at the music and brilliant art on the already beautiful face of the Cathedral. Tuesdays are my favorite night to go because the Downtown Tuesday program offers free parking from 5pm onward. You can park at the lot above El Mercado, the location of Mi Tierras mentioned by several others and after a meal, walk a few minutes over to the cathedral. San Fernando is right above a riverwalk entrance so you can also add the riverwalk to your visit.