Mausoleum No.1 is located 230 meters to the South-East of the Small Minaret. It was built of limestone in the last decades of the XIV century. The building is dimensioned 6 meters 60 centimeters by 7 meters. Thickness of the walls is from 90 centimeters to 1 meter. Depth of the foundation is 80 centimeters. The southern wall was adjoined by a portal 2.5 meters in length and 2 meters in width.
All that remains of the building is a foundation ditch and individual minor masonwork.
The mausoleum contains one burial performed in accordance with a Muslim ritual.
The mausoleum was archaeologically researched in 1970–1971. During the conservation and restoration works of the 1970s the monument was chosen to be openly displayed. In 1971 the mausoleum’s remains were subjected to conservation with the use of original stones from the excavation. Three-layer masonwork was implemented, similar to the one used by the Bolgars. The masonwork was repaired by 2012.
For protection of the building it was encircled by a drainage line, and the foundations were adapted for free moisture permeation.
Mausoleum No.1 is located near the Khan’s Tomb and Small Minaret Complex and Mausoleums No. 2, 3 and 4.