Bibi-Heybet (aunt of the stern) is a 'pir' located near the mountains of Baku amidst a vast cemetery. The tomb of Bibi-Heybet, one of the relatives of the Prophet Muhammad, is located in a vast mosque, very willingly visited by Muslims. Bibi-Heybet is famous for her miraculous power to heal the sick. Many of the Muslims bequeath to be buried near this mosque.