Freetown Christiania, also known as Christiania ( or ), is an intentional community, commune and micronation in the Christianshavn neighbourhood of the Danish capital city of Copenhagen. It began in 1971 as a squatted military base. Its Pusher Street is famous for its open trade of cannabis, which is illegal in Denmark. Culture Christiania is considered to be the fourth largest tourist attraction in Copenhagen, with half a million visitors annually. The residents of Christiania are called Christianit, or Christianshavner and Amagerkaner because Christiania is located on the island of Amager. The 1976 protest song ("You cannot kill us"), written by Tom Lunden of flower power rock group Bifrost, became the unofficial anthem of Christiania. The flag of Christiania is a red banner with three yellow discs representing the dots in each i in "Christiania". Within Christiania itself no private cars are allowed. Residents with cars park on the streets surrounding the Freetown. After negotiating with city authorities, Christiania has agreed to establish parking areas for residents' own cars on its territory. As of 2005, parking space for only 14 cars had been established within the area. Geography Christiania is an intentional community and commune of about 850 to 1,000 residents, covering in the borough of Christianshavn in the Danish capital city of Copenhagen on the island of Amager. The area of Christiania consists of the former military barracks of Bådsmandsstræde and parts of the city ramparts. The ramparts and the borough of Christianshavn (then a separate city) were established in 1617 by King Christian IV by reclaiming the low beaches and islets between Copenhagen and Amager. After the siege of Copenhagen during the Second Northern War, the ramparts were reinforced during 1682 to 1692 under Christian V to form a complete defence ring. The western ramparts of Copenhagen were demolished during the 19th century, but those of Christianshavn were allowed to remain. They are today considered among the finest surviving 17th century defence works in the world. The outermost defence line, Enveloppen, has been renamed Dyssen in Christiania language (except for the southernmost tip of it which was not annexed by Christiania). It is connected to central Christiania by a bridge across the main moat or can be reached by the path beginning at Christmas Møllers Plads. Four gunpowder storehouses line the redans. They were built in 1779–1780 to replace a storage in central Copenhagen, at Østerport, which infamously