In an effort to make make traversing the west side of Norway's 1,190 fjords easier, the Norwegian Public Roads Administration has proposed the world's first underwater floating tunnel. The tunnel is slated to cost $25 billion (£19 million) and will be composed of two 4,000-foot-long, curved concrete tubes, submerged 66 feet below the surface of the Norwegian Sea.

The tunnels are just one of the options proposed options for the Route E39 coastal highway. It would cut down what is currently a 21-hour drive from the southern city of Kristiansand to Trondheim in the north.

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