The sight was registered on the UNESCO World Heritage List. Sheikh Safi, an eminent leader of an Islamic Sufi order established by the Safavids, was born in Ardabil. It was constructed between the beginning of the 16th century and the end of the 18th century. The Safavids valued the tomb-mosque form, and the tomb with its mausoleum and prayer hall is located at a right angle to the mosque. The buildings in the complex surround a small inner courtyard (31 by 16 meters). The complex is entered through a long garden. The mausoleum, a tall, domed circular tower decorated with blue tile and about 17 meters in height; beside it is the 17th-century Porcelain House preserving the sanctuary's ceremonial wares. Also part of the complex are many sections that have served a variety of functions over the past centuries, including a library, a mosque, a school, mausolea, a cistern, a hospital, kitchens, a bakery, and some offices. It incorporates a route to reach the shrine of the sheikh divided into seven segments, which mirror the seven stages of Sufi mysticism. Various parts of the mausoleum are separated by eight gates, which represent the eight attitudes of Sufism.