The Imaret Mosque (Gedik Ahmet Paşa) Külliye is a complex of a mosque, a school for children, a medrese (Moslem theological school), baths and mosque. It was built under Gedik Ahmet Paşa, designed by the architect Ayaz Ağa between 1472-1477 and has a minaret with one balcony and ribbed, spiralling decoration. The mosque stands independent of the other buildings and has two big domes. The medrese has been used as a museum but was undergoing restoration (or just had done so, standing empty) when I visited. It has 26 domes and a central court. The bath is still being used.

This obviously is the mosque.