Great Kümbet
It is located at the entrance to Ahlat from Tatvan direction, on the right of the road, close to Lake Van, in a location called "Eyiler" among the people. There is no epitaph of the cupola. However, the remains of the cupola are present in the northeast. The inscription of the Sadi Aka cupola has been found among the stones and has been read 1300. However, it has not survived until today. It is accepted that it was built towards 1285, taking into account the construction technique and ornamentation features. He had a mosque built in Tabriz with the name of Usta Şagirt. Since Ahlat was under the administration of Little Sheikh Hasan, it is possible that he built the Vault of Master Şagirt.