The historical tunnel was opened in January 1875. The tunnel currently transports about 15.000 passengers between Karakoy and Tunel (the end of Taksim istiklal Street) with to railway cars every day.
Just across from the Tunel building in Tunel Square is the Tunel Pasaji (), a quiet lane filled with plants, antique shops, and the R.V. Cafe, a great (if pricey) place for a coffee, tea, herbal infusion, and/or slice of cake
Istanbul (historically Byzantium and later Constantinople; see the other names of Istanbul) is the largest city of Turkey and the third largest city in the world. The city covers 27 districts of the Istanbul province.It is located on the Bosphorus Strait and encompasses the natural harbor known as the Golden Horn, in the northwest of the country. It extends both on the European (Thrace) and on the Asian (Anatolia) side of the Bosphorus, and is thereby the only metropolis in the world which is situated on two continents. In its long history, Istanbul served as the capital city of the Roman Empire (330–395), the East Roman (Byzantine) Empire (395–1204 and 1261–1453), the Latin Empire (1204–1261), and the Ottoman Empire (1453–1922). The city was chosen as joint European Capital of Culture for 2010. The historic areas of Istanbul were added to the UNESCO World Heritage List in 1985.