CH / A2 The Tunnels of Lucerne (Luzern)

Switzerland A2 (Chiasso - Gotthard - Basel), crossing the numerous tunnels of the city of Lucerne (Luzern).
Among these tunnels, The Sonnenberg Tunnel was the world's largest civilian nuclear fallout shelter, designed to protect 20,000 civilians in the eventuality of war or disaster.
Average Timelapse: 3.2x
Roadmap: goo.gl/maps/3T...
Wiki: en.wikipedia.o...)