The oldest and largest congregational mosque of Herat was originally built in the 1200 AD, but has existed in its current shape since the 15th century. Featuring both Ghurid brickwork and Timurid tile work, its surrounding walls are decorated with Qu'ranic verses. It is located in the middle of the city, surrounded by trees and shops. Besides being the biggest mosque in the region, it is also a place for Friday and Eid prayers. Throughout the dynasties, the region's rulers announced major decisions at this venue.