Turkey, Istanbul, the Ecumenical Patriarchate of Constantinople, Rum Patrikhanesi, Fener- Halic, Istanbul, rich collection of icons, manuscripts. http://www.patriarchate.org/
Turkey, Turkish Historical Society, list of journal contents pages relevant to the culture/history/archaeology of Turkey – Journals, everything from Acta Asiatica to Zion. http://www.ttk.gov.tr/data/22.htm
Turkey, The Istanbul Archaeological Museum, http://www.kultur.gov.tr/EN/belge/2-19958/eski2yeni.html, major Archaeological Museum, major collection of materials from Constantinople and elsewhere.
Museum of Mosaics: pavement mosaics from the Great Palace (5^th century); Topkapi Saray: illuminated manuscripts including the Octateuch from 12^th century; Museum of Antiquities. Pavement mosaics from Turkey, Antioch (Antakya) Museum: pavement mosaics from Antioch, Seleucia, Tarsus (4^th-6^th centuries).
Turkey, The Antalya Museum, http://www.kultur.gov.tr/EN/belge/2-14767/archeology.html, is of interest, the archaeological museums of Izmir, Ephesus, and Aphrosidias.
Turkey, Constantinopol (Istambul) St Sophia: was built by Justinian to replace an earlier basilica, destroyed in 532. He entrusted the task to Anthemius of Tralles and Isidore of Miletus, and placed enormous funds at their disposal. The work was completed within the astonishingly short space of five years and six months (532-537). Preceded by a huge narthex, the church proper occupies an area of 7000 square metres, being 77 long by 71,7 metres broad. The existing dome, rebuilt in 562, rises 54 metres above the ground with a diameter of 31 metres, surpassing in height that of the Panteon at Rome (43 metres) and the vaults of Gothic cathedrals. Today the floor is covered with great marble flagstones. In the time of Justinian, the Great Church was adorned with a pavement of mosaics combined with polychrome marbles, a description of which has come down to us. The lower portion of the walls was ornamented with marble facings, carefully polished. Above these marbles, the walls, vaults, dome and pendentives were decorated entirely with mosaics. These were either destroyed or covered with plaster when the church was converted into a mosque in 1453. The Byzantine Institute of America has removed the plaster and restored a large number of mosaics from the time of Justinian, but most of the mosaics are of post-iconoclastic date, between the middle of the 9^th and end of the 12^th centuries. It is possible that other mosaics survived in the dome, beneath the Turkish repaint. St Sophia was used as a mosque until 1935. Today it is a museum. St Irene: was one of the first sanctuaries in Constantinople. Rebuilt by Justinian in 546. Nothing survives of its decoration, apart from a large cross in the Eastern apse, which must have been executed in the iconoclastic period. St Theodore (Kilise Djami) mosaics of the 14^th century; Chora Monastery (Kahrie Djami): mosaics and frescoes of 14^th century.
Important Website: http://www.choramuseum.com/ with more information. Virgin Pammakaristos: (Fetiye Djami): 14^th century mosaics. Destroyed in 1586. The south nave of the church terminates in a lateral chapel decorated with important early 14^th century mosaics. The Byzantine Institute of the University of Boston brought to light a Deesis and several mosaics, whose style recalls that of the Chora Church.
St John of Studius, the Monastery of Studius was the largest in Constantinople and for centuries played a decisive role in the religious life of the Orthodox world. The monastic church – one of the most beautiful churches in the capital – is now a ruin. It is known that the walls were once decorated with mosaics, and there are still remnants of a fine mosaic pavement. http://en.wikipedia.org/wiki/Hagia_Sophia
Turkey, Cappadocia. The territory of Asia Minor whose capital was Caesarea. In the fifth and sixth centuries an important monastic colony became established in the volcanic region. Most of the Cappadocian frescoes date from the 10^th to the 13^th centuries. This powerful centre of monastic life and culture was abandoned after Turkish invasion.
Göreme. The ancient town of Korama (Cappadocia). Numerous rock churches: Tokali Kilise, Kiliclar; Elmali Kilise (11^th-13^th century frescoes).
Soghanli. After Göreme, the region in Cappadocia with the most important group of rock churches. The most important one is the Church of St Barbara, which has tenth and eleventh century frescoes.
Trebizond (Trebzon, Trapezus). Capital of the Byzantine Empire between 1204-1461 and one of the main intellectual centres of Hellenism. Among the numerous churches of Trebizond may be mentioned St Sophia, the best preserved of the Byzantine monuments in Trebizond; probably built shortly after the accession of the Comnene dynasty of Trebizond in 1204. Enlarged and ornamented with frescoes in about 1260. These frescoes rank among the finest works of 13^th century Byzantine painting.
http://en.wikipedia.org/wiki/Hagia_Sophia,_Trabzon. Virgin Theoskepastos (14^th century); the Virgin Chrysokephalos, Church of St Eugenius, church and  frescoes St Savas (1411). Forty kilometers south-south-east of Trebizond, at the height of 1200 m, stands the Monastery of Sumela, one of the highest places of Orthodoxy. Now abandoned, the monastery contains frescoes from 14^th – 16^th centuries. http://en.wikipedia.org/wiki/S%C3%BCmela_Monastery
Turkey, Edessa, Capital of Osrhoëne, populated by Syrians. King Abgar VIII (179-214) was converted to Christianity; Edessa was one of the first states to make Christianity an official religion.
Turkey, Ephesus. John of Ephesus. The basilica of St John – one of the most magnificent sanctuaries built by Justinian I – was built on the site of the apostle´s tomb. Converted into a mosque in 1330, the sanctuary was destroyed when the city was captured by Tamburlaine´s troops
Proconnesus. Small island of the Propontis, occupied in about 670 B.C . by the Milesians. Its rich marble quarries were exploited throughout antiquity. In Byzantine times it took the name Marmara marble.
http://en.wikipedia.org/wiki/Marmara_Island
Turkish on-line bookshop, http://kitap.antoloji.com/kategori.asp?P=3&SER=&CAT=2113&CAS=&PUB=&ara=&yer=