The Springfield Republican Party Headquarters is the building where the Springfield Republican Party meets.
The building is a sinister-looking castle located at the end of a tall cliff. A secret access tunnel is located at a Lard Lad statue: there are stairs inside the statue that lead to the castle.
- Episode – "Sideshow Bob Roberts"
- Episode – "Brawl in the Family"
- Episode – "Sweets and Sour Marge"
- Episode – "Mr. Spritz Goes to Washington"
- Episode – "E. Pluribus Wiggum"
- Episode – "You Kent Always Say What You Want"
- Episode – "To Cur, with Love"
- Video game – The Simpsons: Tapped Out