Stretching 18 km between Denmark and Germany, this €7bn immersed tunnel is the world’s longest road and rail link. By 2029, it will replace a 45-minute ferry trip with a 10-minute drive or a 7-minute ...

Norway has undertaken one of the most advanced engineering challenges in recent history: a 17-mile twin-tube tunnel that will become the world’s longest and deepest undersea road tunnel once completed ...

For generations, Norway’s west coast has lived by ferry timetables and weather forecasts. A strong wind could stretch a routine commute into an all-day affair. A winter storm could reroute ferries ...