sides by 32 khanas, or small study cloisters for religious scholars. The mosque's four 107 foot tall minarets are located in each corner of the courtyard. Main prayer hall The mosque's prayer hall lies at the westernmost portion of the site, and is approximately 130 feet long and 42 feet wide. It is divided into five sections aligned into a single long aisle running north to south, similar to the prayer hall at the older Mosque of Mariyam Zamani Begum. The central section of the prayer hall is topped by a 31 foot tall dome with a diameter of 23 feet resting upon four arches that form a square pavilion - a Persian architectural form known as a Char Taq. The remaining compartment in the prayer hall are topped by a 21 foot tall dome with a diameter of 19 feet, built in a style similar to that of the earlier Lodi dynasty. The northernmost and southernmost compartments also contain small cells which house spiral staircases that lead to the rooftop. Walls of the prayer hall's interior are also decorated with calligraphy in both Arabic and Persian. Each wall is divided further, and contain unique mosaic designs. The acoustic properties of the dome allow for the imam's sermon to be projected across the mosque's courtyard. Conservation The mosque complex is listed on the Protected Heritage Monuments of the Archaeology Department of Punjab. In 1993 the site was added to UNESCO's tentative list for World Heritage Site status. In 2004, the Government of Punjab embarked on conservations and restoration efforts for the mosque. In 2007, the Aga Khan Trust for Culture partnered with the Government of Punjab to restore the monument, and in 2009 began a two year long in-depth survey of the mosque as part of a larger effort to restore the Walled City of Lahore. In 2015, the site was mapped in 3D through a partnership between the Lahore University of Management Sciences and the United States Agency for International Development. Restoration Restoration works at Wazir Khan Mosque began in 2004. In 2012, the Pilot Urban Conservation and Infrastructure Improvement Project—the Shahi Guzargah Project was launched by the Government of Punjab and the Aga Khan Trust for culture which restored a section of Shahi Guzargah between the mosque and Delhi Gate. The project was completed in 2015 with support from the governments of Norway and the United States of