On 27 April 1944 Sir Patrick Abercrombie's Plan for Plymouth to rebuild the bomb-damaged city was published; it called for demolition of the few remaining pre-War buildings in the city centre to make way for their replacement with wide, parallel, modern boulevards aligned east–west linked by a north–south avenue (Armada Way) linking the railway station with the vista of Plymouth Hoe. A peripheral road system connecting the historic Barbican on the east and Union Street to the west determines the principal form of the city centre, even following pedestrianisation of the shopping centre in the late 1980s, and continues to inform the present 'Vision for Plymouth' developed by a team led by Barcelona-based architect David MacKay in 2003 which calls for revivification of the city centre with mixed-use and residential. In suburban areas, post-War prefabs had already begun to appear by 1946, and over 1,000 permanent council houses were built each year from 1951–57 according to the Modernist zoned low-density garden city model advocated by Abercrombie. By 1964 over 20,000 new homes had been built, more than 13,500 of them permanent council homes and 853 built by the Admiralty. Plymouth is home to 28 parks with an average size of 45,638 square metres (491,240 sq ft). Its largest park is Central Park, with other sizeable green spaces including Victoria Park, Freedom Fields Park, Alexandra Park, Devonport Park and the Hoe.