Step down 1&1, you no longer have the coolest datacentre. That honour now belongs to Bahnhof, at their Pionen datacentre, buried deep in the bedrock below Stockholm in a former nuclear bunker. I don’t know where to start – it uses submarine engines! It has waterfalls! There’s 1,500,000 Watts of cooling! It can withstand a hit from a nuclear missle!
Click the image below to check it out, before my head explodes from the awesomeness.
(via, and more pictures and info at, Royal Pingdom)