The building is four stories high, with a weight attached to it. The jail features a rock crushing yard, a kitchen, cafeteria (serves chili and uranium-free water), and the jail cells. The inmates do many activities such as crush rocks, lift weights, and make wire hangers and license plates. There have been many instances that involved main characters going to jail.
- A large pile of rocks Mrs. Puff was seen smashing for an unknown reason.
- A giant "cannonball" weight attached to the main building.
- A robot computer Spongebob used in The Battle of Bikini Bottom.
- A seemingly bottomless extra security cell Plankton was seen in in Krabby Road.
- A solitary confinement room supposedly made of sponge. (This may not be entirely accurate as Mrs. Puff was delusional at the time.)
- A coat hanger factory. (This may be a reference to the cliché of a license plate factory being in prisons.)
- A plankton-sized prison cell, actually a safe, seen in "Krabby Road".
- A cafeteria that supposedly only serves chili.
- A water supply that supposedly contains high amounts of uranium. (This may be a reference to the recent worry of mercury contaminated water. This may also be a reference that Bikini Atoll, the location of Bikini Bottom was the site of a dozen or so nuclear tests.)
- Clear glass communication windows.
- A supply of novelty lollipops, as seen in "Life of Crime".
Mrs. Puff has been in jail in "Hall Monitor", "No Free Rides", "Ditchin'", "Summer Job", and "Doing Time. In "Hall Monitor" and "Doing Time", Mrs. Puff was sent to jail because SpongeBob destroyed Bikini Bottom. In "No Free Rides", she stole SpongeBob's new boatmobile and crashed it into a police car. In "Summer Job", she was going to be sent to a Stoney Loaksome in the same outfit as "Hall Monitor". And in "Ditchin'", she was sent to jail because she skipped Jury Duty.
Squidward Tentacles has been in jail in "Good Ol' Whatshisname" and "Krabby Road." He went to jail in Good Ol' Whatshisname for stealing Mr. What Zit Tooya's wallet. He was also sent to jail for no reason in Fiasco!.
Sheldon J. Plankton was in jail in "Krabby Road." He had attempted to steal the Krabby Patty; this is his first time seen in jail. He also got arrested in the movie , "Sweet and Sour Squid', and "Fiasco!".
- Although he has been arrested many times, Mr. Krabs has never been actually shown in jail.