Berlin Tegel Airport is notable for its hexagonal main terminal building around an open square, which makes walking distances as short as from the aircraft to the terminal exit. The airport was scheduled to close in June 2012 after Berlin Brandenburg Airport (BER) opened, but due to ongoing delays with BER, the future of Tegel is uncertain. A campaign was launched to keep Tegel Airport open, which gathered signatures for a referendum for voters to decide on the future of the airport. While the referendum was non-binding, it did result in a majority of votes cast in favor of keeping Tegel open and
Billy Bishop Toronto City Airport time, the island airport site was to become the site of the "Harbor City" residential development, although a replacement for the island airport had not been agreed upon. A 1969 proposal to build a new airport by the new headland was met with opposition from local residents and Toronto City Councillors and was dropped. With plans uncertain, the Government of Canada requested that the Harbour Commission continue to operate the airport as is in the interim. In 1972, the "Harbor City" project died when the governments of Canada and Ontario proposed to build a new major airport in Pickering, Ontario.