Those who pre-order Assassin’s Creed II through GameStop will net a download code for an in-game version of the 15th century Florentine palace, The Palazzo Medici.
Here’s the info:
Reserve Assassin’s Creed 2 and receive a GameStop exclusive code to unlock one of the Renaissance’s most prestigious monuments, the Palazzo Medici. You will receive exclusive access to this majestic building, and the freedom to discover the treasure hidden within it’s ancient walls.
This is only for the PS3 and Xbox 360 versions. Sorry PC people.