The Chora Museum, also known as the Kariye Museum or Church of the Holy Savior (or St. Savior) in Chora, is a Byzantine church in the Edirnekapı neighborhood near the Byzantine walls, about 3 miles from Sultanahmet (Hagia Sophia, Blue Mosque, Topkapi Palace, Hippodrome etc.)
The building itself is unassuming, you might walk past without even noticing it. Please don’t! In my humble opinion, it’s one of the best sites in Istanbul, and that’s saying a lot. Inside is a collection of the best Byzantine art in Istanbul and among the best anywhere.