The Gotthard Base Tunnel is a remarkable engineering feat that has been in the making for over two decades. On June 1, 2016, the world witnessed the historic opening of the world’s longest and deepest railway tunnel. Spanning a length of 57 km, the Gotthard Base Tunnel is a major breakthrough in the field of transportation and infrastructure. It is expected to revolutionize the way people travel between northern and southern Europe, reducing travel time by up to two hours.