See all Restaurants in San Antonio San Antonio for: Adventure, Food And Dining, Art And Culture, Nightlife, Spa, History, First Timers, Family, Romance, Shopping Casa Rio Cuisines: Authentic Local About Casa Rio (Tex-Mex). A great Tex-Mex restaurant if you're on a budget. This is the oldest restaurant on the River Walk, opened in 1946. You can enjoy good local-style dining in a colorful and romantic setting. Add to Wish List
