Prior to 1982, the main airport was Minsk-1 Airport, opened in 1933 a few kilometres to the south of the historical centre. In 1955 it became an international airport and by 1970 served over 1 million passengers a year. After 1982, it mainly served domestic routes in Belarus and short-haul routes to Moscow, Kyiv and Kaliningrad. Minsk-1 was closed in December 2015 because of the noise pollution in the surrounding residential areas. The land of the airport is currently being redeveloped for residential and commercial real estate, branded as Minsk-City. The new Zelenaluzhskaya line of the Minsk Metro is also under construction on the former site of the airfield.