The Willis Building in Ipswich, Suffolk, England, is one of the earliest buildings designed by Norman Foster and Wendy Cheesman after establishing Foster Associates. 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' architect…The Willis Building in Ipswich, Suffolk, England, is one of the earliest buildings designed by Norman Foster and Wendy Cheesman after establishing Foster Associates. 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.