Underwater train route in Denmark!

Denmark is taking a big step forward towards realizing one of the biggest public infrastructure projects ever undertaken in Europe, the ...

Underwater bridge that connects Denmark and Sweden!

The Oresund Bridge connects Denmark and Sweden from Copenhagen to Malmo over the Oresund Sound. The bridge, which both support the mo...

Underwater waterfall, off the island of Mauritius! "When viewed from above, a runoff of sand and silt creates the impression of ...