The Gotthard Tunnel is one of the connections that take vacationers from Switzerland to Italy. Strictly speaking, this involves traveling from Basel to the neighbouring city of Chiasso.
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Simplon Tunnel, railway tunnel from Iselle, Italy, to Brig, Switzerland, one of the longest railway tunnels in the world and one of history's great engineering feats. Running about 20 km (12.5 miles) long, it was the largest of the great Alpine tunnels when it opened to traffic in 1906.
The Laerdal Tunnel in western Norway is the longest road tunnel in the world. It takes about 20 minutes to pass through the tunnel. Brightly colored lights placed every six kilometers help drivers stay alert.
And then we shouldn't forget that Italy, because of its topography and chain of mountains separating it from the rest of Europe, has had to make “a virtue out of necessity”, digging tunnels in order to create an efficient transport system both of railway and of road.