Kumkapı - St. Kyriaki or Hagia Kyriaki Church

Kumkapı St. Kyriaki Church is a Greek Orthodox church located in the Kumkapı neighborhood of Istanbul, Turkey. It was originally built in the 5th century, but the current building dates back to the 19th century. The church is named after Saint Kyriaki, who is known as the protector of the eyes.

The church is known for its impressive Byzantine-style architecture, which features a large central dome and intricate mosaics. It is also home to a number of important relics, including a piece of the True Cross and the tomb of Saint Metrophanes, who was the first bishop of Byzantium.