Pictures of the mausoleum ("türbe") for the founder in the garden behind the mosque. It seems to have superior Iznik tiles, but I could only look in through a glass screen at some distance from the (half open) door.
Gebze Coban Mustafa Pasa complex december 2015 5428.jpg
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Gebze Coban Mustafa Pasa complex 2015 1009.jpg
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Gebze Coban Mustafa Pasa complex december 2015 5427.jpg