Archaeological site Aldringaborg in Westerkwartier

You're standing at Zijlsterweg 4, just outside the village of Feerwerd in the province of Groningen. You'll see a farmhouse with a head, a neck and a body, a traditional farm layout. But looks can deceive. This is an office, built in 2012 for the company Koepon, designed by the architects De Zwarte Hond. And long before that, a borg stood here, a fortified manor of the local gentry: the Aldringaborg, also called the big borg.