Alderney Museum is, as its name suggests, a museum located in Alderney City in the State of Alderney. It appears in Grand Theft Auto IV and both its episodes; The Lost and Damned and The Ballad of Gay Tony.
In GTA IV, the player can find a Cognoscenti parked beside the building, which can be stolen for Stevie's Car Thefts. The Alderney Museum is the only museum in GTA IV and it's episodes not to be mentioned on Peepthatshit.com. A Flying Rat (or a Seagull in the episodes) can be found outside the museum on a railing. According to the banner hanging around the building its celebrating it's 330 anniversary there, which means it was opened to the public at 1708.