Time Out says
Bearing the distinction of being the oldest underground train in the world after the London Underground, the funicular between Karaköy and Tünel Square opened in 1875 as a means of allowing the traders and merchants in the area a faster way of commuting up and down the steep hill. It still operates today and is a popular way of reaching Beyoğlu for those alighting at the nearby Karaköy Pier. The commute takes approximately 90 seconds and the two cars run two and fro every five minutes.
Tünel Meydanı, Beyoğlu
|Opening hours:||Mon-Sat 07:00-22:45. Sun 07:30-22:45.|