The Plunge San Diego is a historic landmark known to be one of the largest indoor pools in Southern California. The aesthetics reflect floor to ceiling windows and a retractable roof, allowing swimmers to enjoy the warm San Diego weather year round. The 10,500 square foot pool is 175 feet long and 60 feet wide. With 355,000 gallons of water and views looking out to Mission Beach, the Plunge has something for everybody. The Plunge San Diego offers water aerobics, swim lessons for children and adults, Master Swim programs, private events and much more. Located inside of Fit Mission Beach at Belmont Park an ocean front amusement park at Mission Beach, The Plunge at Fit is open to the public and welcomes swimmers of all ages.