The Qalawun complex is a massive pious complex in Cairo, Egypt, built by Sultan al-Mansur Qalawun from 1284 to 1285. It is located at Bayn al-Qasrayn on al-Mu'izz street and like many other pious complexes includes a hospital (bimaristan), a madrasa and mausoleum. Despite controversy surrounding its construction, this building is widely regarded as one of the major monuments of Islamic Cairo and of Mamluk architecture, notable for the size and scope of its contributions to legal scholarship and charitable operations as well as for the richness of its architecture.