Tünel Beyoğlu station Overview Owner Istanbul Metropolitan Municipality Locale Istanbul Transit type Funicular Number of stations 2 Website http://tunel.iett.istanbul/ Operation Began operation January 17, 1875 Operator(s) İETT Number of vehicles 2 Technical System length 573 m (0.573 km; 0.356 mi) Track gauge 1,435 mm (4 ft 8 1⁄2 in) (standard gauge) System map Dist. 0.0 km 0 mi Beyoğlu 0.5 km 0.3 mi Karaköy