Basilica of Saint John the Theologian
The Basilica of Saint John the Theologian (Greek: Βασιλική του Αγίου Ιωάννη του Θεολόγου) was a basilica in the city of Ephesus. It was constructed by Justinian the Great in the 6th century, at a site where John the Apostle was said to have been buried.
Source: Wikipedia — Basilica of Saint John the Theologian (CC BY-SA 4.0)