There are roughly 1300 tunnels and galleries with a total length in excess of 2000 km to be found in Switzerland and they are continuing to be built.
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China???????? has the most number of tunnels in the world. There are 16229 tunnels in China. The largest tunnel in China is Bohai Strait Tunnel. After China, Japan???????? has the most number of tunnels in the world.
1. -The Laerdal tunnel. With its 24.5 kilometers, Laerdal tunnel is the longest in the world, traversing several mountainous formations between Laerdal and Aurland, in western Norway.
There are a large number of tunnels in the Alps of Central Europe. They have the advantage of providing shorter routes and faster journey times by avoiding narrow, winding routes over mountain passes which may well be affected by winter conditions.
These form the backbone of Norway's road network. With a staggering count of over 900, they ensure that even the remotest parts of the country are accessible. These tunnels range from short passages in urban areas to extensive routes cutting through mountains.