After the military had left, the area was only guarded by a few watchmen and sometimes of homeless people went in the area for sleep or for living there.On 4 September, 1971, neighbours of the area broke down a wall for making a place where their children could play.On 26 September, 1971, Christiania was opend to people by Jacob Ludvigsen, a well-known provo and journalist who published a magazine called "Hovedbladet" ('The main paper'). In the paper, Ludvigsen wrote an article in which he and five others went on exploration into what he called 'The Forbidden City of the Military'. The spirit of Christiania quickly developed into one of the hippie movement, the squatter movement, collectivism and anarchism, in contrast to the site's previous military use.