During the Viking Age, Trelleborg near Slagelse in Denmark was one of the biggest Viking fortresses. When it was decided that the site needed an experience and knowledge centre to tell the story of the fortress, PLH Arkitekter had to be creative in their approach. “We couldn’t just build the centre underground, because the client wanted a visible building that would be an attraction in itself. The entire location has a circular shape, and when we found out that Denmark’s only preserved Viking shield was discovered here, we decided to also shape the building in the form of this circular shield, ” says Søren Mølbak, partner and architect at PLH.