In 2009, internet service provider Bahnhof opened the doors to its underground Pionen data centre in the White Mountains of Stockholm, Sweden. The facility shares the same name and location as a 1970s atomic shelter built by the Swedish government during the Cold War. It also hosted Wikileaks' servers and has the architectural opulence of a James Bond villain's underground lair. Check out the rest of the gallery for an in-depth tour. [Image credit: Bahnhof]
The Pionen underground bunker, prior to Bahnhof's extensive reconstruction. The site was decommissioned by Sweden’s Civil Defense over 20 years ago. [Image credit: Bahnhof]
The Pionen data centre is buried beneath 30 metres of granite bedrock, with three physical datalinks set into the mountain. During the renovation process, Bahnhof blasted holes into the mountain's interior to create 4000 cubic meters of additional space.
[Image credit: Bahnhof]
A woman walks her dog past the entrance to Bahnhof's repurposed bunker. [Image credit: Getty Image]
Bahnhof employees go about their work in Pionen's subterranean office. [Image credit: Getty Image]
The abundance of greenery helps to remind Pionen staff of the outside world. The primary workplace simulates daylight and comes with a 2600-litre fish tank. [Image credit: Getty Image]
A lunar-themed conference room looms over the Pionen server hall. [Image credit: Getty Image]
The conference room floor has been painted to resemble the surface of the moon. Bahnhof founder Jon Karlung said it's his favourite room in the facility. [Image credit: Getty Image]
Pionen's network operations centre is decked out like a jungle cave, complete with artificial fog. [Image credit: Bahnhof]
Bahnhof opted to preserve the unfinished rock walls when designing much of the facility's interior. [Image credit: Bahnhof]
Plants, speakers and artificial ponds dot the data centre hallways. [Image credit: Getty Image]
Artificial waterfalls add to the underground 'super-villain lair' feel. [Image credit: Getty Image]
Distributed services are connected to the Bahnhof Carrier Network (BCN), which is northern Europe's fastest carrier network. [Image credit: Bahnhof]
[Image credit: Bahnhof]
The Pionen power supply room has a retro science fiction feel. Thunderbirds are Go! [Image credit: Bahnhof]
Bahnhof's backup power supply room. [Image credit: Bahnhof]
A man works on his laptop next to Pionen's backup power generators. [Image credit: Getty Image]
Standby power is supplied by a pair of Maybach MTU diesel engines equipped with sound-horns. They were originally built to power German submarines. [Image credit: Bahnhof]
A man squats inside Pionen's pristine server halls. [Image credit: Getty Image]
Bahnhof founder Jon Karlung shows off the controversial Wikileaks servers ensconced in Pionen White Mountains. Wikileaks' primary web server was hosted by Bahnhof between October 2010 and July 2011. The Wikileaks database is now offline, but still contains around 200GB of data. [Image credit: Getty Image]
Introductory pricing starts at 9.5 Euro ($A11.82) per month. A 'mini start-up' includes a single CPU, 256MB RAM, 6GB HDD, 5Mbit interface and 1TB bandwidth. [Image credit: Bahnhof]
In 2009, internet service provider Bahnhof opened the doors to its underground Pionen data centre in the White Mountains of Stockholm, Sweden. The facility shares the same name and location as a 1970s atomic shelter built by the Swedish government during the Cold War. It also hosted Wikileaks' servers and has the architectural opulence of a James Bond villain's underground lair. Check out the rest of the gallery for an in-depth tour. [Image credit: Bahnhof]