Eurasia Tunnel (Avrasya Tüneli), Tunnel under the Bosphorus between Asia and Europe, Full Driving 4K

One Tunnel to Connect Two Continents
The only city settled on two continents, the city of Istanbul dates back to 660 BC and is now one of the most populous in the world with over 15 million people. The first road tunnel crossing of the Bosphorus in Turkey will provide an important transportation link between the European and Asian sides of Istanbul, reducing travel time from 100 minutes to 15 minutes. It is part of a 9 mile (14.6 kilometres) highway project.
The project reduces the travel time between Kazlicesme and Goztepe from 100 minutes to just 15 minutes. The 5.4km twin-deck tunnel was built underneath the seabed of Bosphorus, also known as the Istanbul Strait. The project also involved the improvement and widening of the roads leading to the tunnel.
A ground-breaking ceremony for the project took place on 26 February 2011. The tunnel was inaugurated in December 2016, with a daily capacity of 120,000 vehicles in both directions. A $1.1bn investment was made in the project.