Moti Masjid, one of the "Pearl Mosques", is a 17th century religious building located inside the Lahore Fort. It is a small, white marble structure built by Mughal emperor Shah Jahan, and is among his prominent extensions (such as Sheesh Mahal and Naulakha pavilion) to the Lahore Fort Complex. The mosque is located on the western side of Lahore Fort, closer to Alamgiri Gate, the main entrance.