[1] [2] The harbour lay on the southern shore of the Golden Horn, east of today's Galata Bridge, in the sixth region of Constantinople.
The Neorion was the first harbour to be erected in Constantinople after its foundation, and the second in the area after the Prosphorion harbour, which existed already under the city's previous incarnation as Byzantium, and lay in the next inlet to the east, right under the northwest slope of the first hill of the city, in the quarter named "ta Eugeniou" (Greek: τὰ Εὑγενίου).
[3] The harbour had the double function of commercial port and shipyard, and hosted also a factory producing oars (Greek: κοπάρια).
[4] Due to the Jewish presence in the area, in the Ottoman period the Byzantine Porta Neoriou of the sea walls changed its name to Çifutkapı ("Gate of the Jew").
[1] One part of the harbour was known as "the old equipment" (Greek: ἡ παλαιὰ ἐξάρτυσις), and hosted a shipyard: in this neighborhood lay the church of Saint Euphemia.