Here’s another fascinating look at Pionen White Mountains, located in central Stockholm. For those who don’t know, it’s the headquarters of Bahnhof, a Swedish Internet Service Provider. This data center is situated 100-feet under the granite rocks of the Vita Berg Park, a former nuclear bunker and command center during the Cold War. Continue reading for more.

Blasting out the 141,000 cubic feet of extra space for all the equipment took approximately two years and the total space spans roughly 1,200-square-meters. However, there were a few challenges, like working with surfaces that don’t offer one square angle (rock), and the main room is not a traditional space limited by surfaces but defined by the emptiness inside a mass