This main gate leads into a 44 x 58 m open courtyard that was used in the summer. A similarly decorated archway on the far side of the open courtyard, with a muqarnas niche, joggled voussoirs and interlocking geometric designs, leads to a covered courtyard (iwan), which was for winter use. The central aisle of the covered hall has a barrel-vaulted ceiling with transverse ribs, with a short dome-capped tower over the center of the vault.