The Ottoman fortress of Seddülbahir on the European shores of the Dardanelles and Kumkale, its sister fortress on the opposite side of the Straits, were both built in 1658 by Hadice Turhan Sultan, the queen mother or valide sultan of Sultan Mehmed IV. The Seddülbahir restoration project illustrates that the type of information that can be extracted from the Ottoman building and repair records is invaluable for guiding decisions concerning potential excavation sites. Along with the non-invasive techniques that are increasingly a part of pre-excavation archaeological planning, a thorough investigation of the extant physical remains, and the visual records provided in engravings and other representational sources, an examination of the building and repair records in the Ottoman archives should be standard methodological practice for any Ottoman era archaeological or restoration project.