OCBC Centre is a commercial property located at 65 Chulia Street. It was the first major skyscraper on Singapore Island and locals refer to it as the “Calculator” because of its flat shape and windows that look like button pads. The building is 197.7m and is a 52 storey building. It was the result of the second Sale of Sites of the Urban Renewal Department of the Housing Development Board in 1968, it started its construction in 1975, construction period lasting for only two years due to a three-tier system. The building was completed on 26 November 1976 and was then dubbed tallest building of the country as well as South East Asia as of that time.The building has undergone several modernizations and OCBC Centre East and South were later constructed.
OCBC Centre was designed to be a symbol of strength and permanence. Its structure consists of two semi-circular reinforced concrete cores as well as three lateral grinders. Today the building functions mainly for offices and restaurants and is open to the public.