This is a complex of museums (I think mainly ethnography) that was under restauration when I visited. It looks quite promising.
The Güpgüpoğlu Konağı (mansion) & Etnografya Müzesi consists of several buildings. The oldest dates back to the 15th century; afterwards changes and addings occurred up to the 18th century. The ‘Haremlik’ (private rooms) was turned into a ‘Müze – Ev’ (House Museum), with restored interiors and mannequins wearing historical dresses and illustrating 18th century daily life as well as festive occasions. The ‘Selamlık’ (reception rooms) and service area are organised as an Etnographic Museum, including old Seljuk and Ottoman artifacts. On the yard too, some old Islamic stone work is on display.
Correspondent: J.M.Criel, Antwerpen.
Sources: Website of ‘Kayseri Müzesi Müdürlüğü’ & Personal visit (2001) .