In addition, he drew up an "Ordinance for the Poor House and Monastery", which he founded at Constantinople in the mid-1070s. This work, known as the "Diataxis", is of value for students of the social, economic, cultural and religious history of Byzantium in Constantinople and the provinces during the eleventh century. It also provides invaluable information regarding the life of Attaleiates himself. It includes a catalogue of the books available in the monastery's library, while also offering details about the founder's fortune in the capital and in Thrace. From the "Diataxis" we learn that Attaleiates owned numerous properties (both farms and urban real estate) in Constantinople, Raidestos (mod. Tekirdag), Selymbria (mod. Silivri).