Üsküdar railway station is an underground railway station located beneath Üsküdar square in Istanbul. It was opened on 29 October 2013 along with the new trans-Bosphorus Marmaray rail tunnel. TCDD Taşımacılık operates commuter trains east to Ayrılık Çeşmesi and west to Kazlıçeşme within 6- to 10-minute intervals. Due to the stations central location, connections to several city bus routes are available.