Status updates, comments, likes, photos, videos... they all require data and need to be accessible within just a few clicks, 24 hours a day, by Facebook's 1.65 billion monthly active users around the world.

That calls for large quantities of data, strong processing power, and a lot of cooling. This is why the seaside town of Luleå, located on the edge of the Arctic Circle and considered Sweden's Silicon Valley, was a perfect location for Facebook to build one of its massive greenfield data center developments.

At 300,000 sq. ft., Facebook's Luleå Data Center is one of the largest and most efficient data centers ever built. The data center, like Facebook's other facilities built by DPR in Oregon, North Carolina and Texas, features a super-efficient design that uses 100 percent outside air to cool the data center. This eliminates the need for power-hungry chillers to cool the tens of thousands of servers that run around the clock. Excess heat that is generated from the servers is pumped back into the building to keep the office space warm for employees. Power is provided locally by a reliable, 100 percent renewable energy source: hydroelectricity. Hydroelectricity is so reliable that Facebook has been able to eliminate the number of onsite backup generators by 70 percent.

As part of Bloomberg's "Hello World" video series, in which journalist and best-selling author Ashlee Vance explores the tech scene in various countries, Ashlee finds out where "all [his] embarrassing photos live" while he takes a guided tour of the facility with Joel Kjellgren, Facebook's site manager.

DPR completed building one of Facebook's Luleå development, aptly named "LLA1," in 17 months through a joint venture between NCC Construction Sweden and Fortis Construction in Portland, Oregon. LLA1 achieved LEED-NC Gold certification by the U.S. Green Building Council and received top honors with the "Innovation in the Mega Data Center" award at the Datacenter Dynamics EMEA Awards in 2014.