Studion Monastery, also Hagios Ioannes Prodromos en tois Stoudiou (Saint John the Forerunner at Stoudios) was one of the most important monasteries at Constantinople until the fall of Constantinople to the Ottoman Turks. The rules and customs of the monastery became the model for monks at Mount Athos and other monasteries of the Orthodox east. The monks, referred to as Studites were in the forefront of many disputes in Constantinople, particular the extended iconoclastic battles of the eight and ninth centuries.