The Sandgoose Museum is a property sold in Fable III located in Understone. It is added with the purchase of the Understone Quest Pack DLC. You can either purchase this property or you will automatically own it depending on your decision at the end of the quest The Voice. When you return to Understone, after leaving, you can enter this property and use the hatch under the stairs to find a cellar containing a chest containing the rare clothing item, the Cook's Hat.