Adjoining a later-period prayer hall to the north, the Imamzada Abd Allah is a flanged tomb tower of uncertain date. The 33 right angle flanges extend from the ground without a socle and connect at the top to form a continuous arcade. Above the arcade, a zone of tile revetment pierced by nine windows leads to the thirty-sided conical roof, recently clad with glazed brick. The tiled section with windows postdates the original construction, which is though to be from the Mongol period.

The decoration of the octagonal interior is largely recent work, with the exception of a stucco inscription below the dome, and the painted stucco star pattern on the dome itself.