Moti Masjid Moti Masjid or the Pearl Mosque was built by Aurangzeb for his personal use. It would take him just a short walk from his bed chamber to reach the sacred place of worship at various times of the day or night. The mosque was also used by the ladies of the seraglio (Harem) who entered through a passage in the northern wall of the enclosure. The mosque is built over a raised plinth and is entered through an eastern arched gateway with a copper plated door. The courtyard of this mosque is enclosed by high walls. Though red sandstone has been used externally, its interior is composed entirely of pure white marble. The prayer hall of the mosque is inlaid with the outlines of 'musallas' (small carpets of prayers) in black marble and it stands at a higher level than the courtyard. The hall is surmounted by three bulbous domes, originally copper plated. In the courtyard is a tank with a fountain used for ablution.