Originally built as the Church of the Holy Savior during the Byzantine era and converted to a mosque during the Ottoman rule of Istanbul, Khora Church is now a museum with colorful, well-preserved frescoes and mosaics. Located outside the Old City in the Edirnekapi neighborhood, the art-filled Kariye Museum (Kariye Müzesi) is well worth the trek.
Gallipoli Tour is a professional tour operator in Istanbul and has been licensed by TURSAB and the Turkey Tourism Ministry under license number A-6073.