(CNN) — Descending up to 40 meters beneath the Baltic Sea, the world’s longest immersed tunnel will link Denmark and Germany, slashing journey times between the two countries when it opens in 2029.

On the shores of the Baltic Sea, in the south of Denmark, a vast engineering marvel is taking shape — piece by giant concrete piece — that, when finished, will drastically redraw the road and rail ...

A record-breaking tunnel is being built under the Baltic Sea between Denmark and Germany, which will slash travel times and improve Scandinavia's links with the rest of Europe. Running for 18km (11 ...

Underwater tunnels had people stumped until French-British engineer Marc Isambard Brunel took inspiration from nature back in 1818. After watching how a shipworm’s shell plates allowed it to bore ...

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