The Gym is a local gym that Larry the Lobster works out at. There is exercising equipment, treadmills, and weights. It is seen in the episode Ghost Host, The Krabby Kronicle, and You Don't Know Sponge. Another gym is shown in The Chaperone as the hosting location of Pearl's prom, possibly being her high school gym.
Pearl's Prom Night at the GymMay or may not be the same building. Seen in the episode "The Chaperone," Pearl and SpongeBob pull up in a limo.