The Willis Building (originally the Willis Faber & Dumas regional headquarters) in Ipswich, Suffolk, England, is one of the earliest buildings designed by Norman Foster and Wendy Cheesman after establishing Foster Associates.[1] Constructed between 1970 and 1975 for the insurance firm now known as Willis Towers Watson, it is widely considered a landmark in the development of the 'high tech' architectural style. The building houses some 1,300 office staff in open-plan offices spread over three floors.