 DEVCON DECISIONS by Clay Mackle, episode 5, amusements. SeaWorld San Antonio is the largest of the three SeaWorld parks. It opened in 1988, and it covers 250 acres. Make sure you have some comfortable shoes that don't mind getting wet. Unlike SeaWorld, I've never actually been to Six Bikes for Yes to Texas since it opened in 1992. It is built inside an old rock quarry, and I've always wondered what a roller coaster ride on the edge of a quarry would be like. In my younger years, Brackenrich Park was the destination. It is located just below the headwaters of the San Antonio River, contains the Japanese Tea Gardens, the San Antonio Zoo, and is next to the Witte Museum and Kitty Park, America's oldest children's amusement park.