The longest and most expensive tunnel in the world. #Switzerland #gotthardtunnel

A post shared by Lingofacts (@lingofacts) on

Switzerland’s Gotthard tunnel is the longest in the world measuring 57km in length, located 2.3km under the Alps, it is 7km longer than the Channel tunnel between England and France. It took 17 years to complete and, with a total cost of some EUR 11, it’s also the world’s most expensive tunnel.

It cuts 45 minutes off travelling between Zurich and Lugano and boosts the Rhine-Alp corridor that stretches from Rotterdam in the Netherlands, crosses Germany and connects the port of Genoa in Italy.