Manasija Monastery is a 15th-century Serbian Orthodox monastery located near the town of Despotovac in central Serbia. The monastery was founded by the Serbian medieval ruler Despot Stefan Lazarević in the early 1400s. The massive structure was dedicated to the Holy Trinity and belongs to the Morava architectural style. The monastery complex is surrounded by monumental, mostly rectangular walls used for defense. The walls consisted of 11 towers, with the most prominent being the Despot's tower.