For a list of cities covered and direct links to their pictures click HERE
Hidden treasure in the heart of Turkey, UNESCO considers it a World Heritage, see link at: http://whc.unesco.org/nwhc/pages/doc/mainf3.htm where it says "... a creative, exuberant type of decorative sculpture particularly on the three doorways, in contrast to the unadorned walls of the interior are the unique features of this masterpiece of Islamic architecture"
Last stop before the Iranian border, beautiful mountains (they call them hills, with the exception of Büyük Ağrı Dağ ( the Big Ağrı Mountain), over 5000 meters.
Quiet place at the Black Sea coast, my personal hidden treasure. North of Kastamonu, which itself is a fine city.
Kütahya is the present day source of porcelain and frit ware as it was earlier produced in Iznik. The quality is steadily rising, partly due to the teaching of Mehmet Gürsoy, see his site at: http://www.iznikcini.com/ I would often travel to the city and his shop, the city is rather unknown, but has a nice old centre, some good buildings and a fine kale (castle) on a hill top.
Iznik, a former capital of the East Roman Empire for a while, was the source of beautiful "frit ware"; much of its production was used in the imperial buildings, the best work is from the age of Süleyman the Great, around 1560, and here are some good examples from 2 mosques (Rüstem Pasha and Eyüp)
Bursa, the former capital before Istanbul was taken in 1453. Beatiful with its mosques I had the pleasure of seeing it once again in the winter of 2003, in snow.