If you live in the UK, this is probably the place where your driver and vehicle registration documents are processed. Its the DVLA in Swansea. It may only be a rumor, but I'm told people work there. Lots of people.
In the day, it sits on top of a large hill visible for miles around like an earthborn Borg Cube.
Must be great being in a collective......... I wonder if they have clones of 'seven of nine' .... hmmm..... perhaps I should get a job application form just in case ......