Dee Why residents a local government. In 1911 it was decided that the tram line that had expanded in sections from Manly since 1903 was to be extended from Brookvale on to Collaroy Beach via Pittwater Road, and soon after to Narrabeen. The line opened on 3 August 1912 with an hourly service, and it was perhaps this development that caused the Salvation Army in 1913 to progressively sell off most of its holdings on the Northern Beaches, starting with The Oaks Estate Auction, which gave its name to one of the main streets of Dee Why, Oaks Avenue. Another main street, Howard Avenue, commemorates Commissioner Thomas Howard, the first commissioner of the Salvation Army in Australia and New Zealand. By 1920, most of Dee Why had been subdivided. From the end of 1938, the trams, as a result of losses due to low population density and competition with new bus routes that duplicated their services, operated only at peak hours for commuters and on weekends for tourists, and finally ceased operating with the final run on 30 September 1939. In 1971, work began on a new Dee Why civic centre, inspired by Sulman Prize-winning architects Edwards, Madigan & Torzillo. The building was completed in 1972 and the Council moved there in 1973 from the Shire Hall in Brookvale where meetings had been held since 1912, making Dee Why the seat of Warringah Council. Early Subdivision Plans Geography Dee Why is contained in the drainage basin of Dee Why Lagoon, and stretches from Victor Road in the west to Dee Why Beach in the east, and from the crest of Wingala Hill to the northern edge of Dee Why Lagoon. The Bicentennial Coastal Walkway from Queenscliff to Palm Beach leads from North Curl Curl Beach in the south, along the cliffs of Dee Why Head and down to the southern end of Dee Why Beach. The track exhibits the coastal heath ecosystem that used to be spread all over the Warringah area, and has been extensively regenerated since 1991. Another significant natural area within Dee Why is the Stony Range Botanic Garden, established in 1957 on the site of an old quarry and located just south of the Dee Why town centre. The garden, which contains plants from all over Australia as well as those indigenous to the area, has four main sections, the rainforest gully, the sandstone heath on