Bowser's Castle Project was invented by unnamed Koopa Troopa, who was a farmer. Bowser and his army stopped near his farm one day and stole anything, that they could eat or sell. One of stolen things was a book with pictures of great castle, floating in space and fireing lazors in Mario's house. Bowser said that he loves pictures and send the book to his castle. Later he send koopas to Space Sector 1337 to build the Castle
Bowser's Castle is the biggest weapon castle in history. Most of mass destruction weapons are in castle dungeons.
Bowser sometimes visits Bowser's Castle to decorate his throne room. It has been rumoured that George W. Bush and The scratch cat are hiding in the weapons warehouse, if seen please report to the koopa squadron -9.
Hallway. Gambling Room. Koopa Bar. Computer Room.
Comedy Club. Kitchen. Factory. Prison.
Police Station. Weapons Room. Store. Waterpark.
Hospital. Movie Theater. Court Room. Bathroom.
Arcade. Museum. Klub Koopa. Power Gym.
Military Room. Bowser's Minion quarters. Zoo. Music Choir.
Lab. Lookout. Bowling Alley. Library.
Aquarium. Pipe Room. Giant Room. Cemetery.
Headquarters. Secret Room. Bowser Statue Room. Boxing Arena.
Escape Room. Engine Room. Swimming Pool. Greenhouse.
Execution Room. Restaurant. Missle launch station. Elevator to Floor 12.
Workshop. Zoo. Ice Rink. Museum. Skiff to Floor 12.
Koopaling's Rooms. Bowser Jr.'s Room. Diamond Vault. Great Bowser Door. Bowser's Throne Room. Bowser's thinking spot.