Located in Texas' most popular tourist city, San Antonio, Six Flags Fiesta Texas is among the best theme parks in America. Visitors to Fiesta Texas will find a wide-range of rides for all ages, as well as a variety of games, shows and eateries. And, although summer's over, the park will still be open on weekends through October. As a bonus, visitors heading to Fiesta Texas during this 'off-season' will likely find cooler daytime temperatures and shorter lines.