Assassin Tombs were hidden tombs located across northern Italy between 1290 and 1476 C.E. There were six tombs built by members of the Assassin Order as dedications to the lives of their residents. These tombs held the bodies of six legendary Assassins that had been exhumed and moved from their previous burial sites.
Each crypt contained a wealth of treasure, and a statue of the Assassin who lay within the tomb. Inside each tomb lay an Assassin Seal, which, when brought together with the other five, unlocked a secure gate in the Sanctuary, beneath the Villa Auditore. Beyond the gate, the legendary Armor of Altaïr could be accessed.