A company called Next Generation Data in Wales has built one of the largest data centers in the world — 750,000 square feet. That amounts to about 17 acres of space in the facility, which used to be a semiconductor plant.
The data center is a three-story facility, with half of it being technical space capable of holding about 17,000 cabinets of IT equipment. Its size puts it on par with the world’s largest data centers. The only one I could find that was equivalent size was NAP of the Americas, a colo facility run by Terremark in Miami.