Portland House is a skyscraper in Westminster, London. It is 101 metres (331 ft) tall with 29 floors. The building was the central feature of the redevelopment of the six-acre (2.5-hectare) old Watney's Brewery site. The architects were Howard, Fairbairn & Partners, and the development took place from 1959 to 1963. Pevsner notes that the architectural form of Portland House was influenced by the Pirelli Tower (1955–58) in Milan by architect Gio Ponti. The development was known as Stag Place. Today the site is Cardinal Place.