It's hard to imagine thousands of people gathered here for aquatic spectacles and legendary rock concerts. Don't miss the old photos behind the remaining seats! Built in 1950, this once enormous outdoor theater hosted the Aqua Follies, featuring high divers, water skiers and synchronized swimming. Later, it became a concert venue, hosting Led Zeppelin and the Grateful Dead in 1969. Only a small section of the grandstand survives today, with historical photographs and information displayed behind it.