In Assassin's Creed II, Ezio Auditore's family villa in Monteriggioni is called Villa Auditore.
The villa becomes Ezio's main headquarters after the Auditore family is forced to flee Florence. Ezio's uncle Mario owns the estate and helps him develop from a young nobleman into an Assassin. The player can restore the villa's buildings and services, turning it into a profitable settlement.
Villa Auditore is fictional, but Monteriggioni is a real medieval walled town in Tuscany. The game uses the town and surrounding region as part of its recreation of Renaissance Italy. The villa's name is easy to confuse with Monteriggioni itself, which is the settlement where it stands, rather than the name of the estate.
The location remains important throughout the Italian trilogy. It serves as a visual symbol of the Auditore family's recovery and as a practical base for upgrading equipment, earning income, and accessing collected items.