Zvartnots International Airport (Armenian: Զվարթնոց Միջազգային Օդանավակայան Zvart'nots' Mijazgayin Odanavakayan) (IATA: EVN, ICAO: UDYZ) is located near Zvartnots, 12 km (7.5 mi) west of Yerevan, the capital city of Armenia. The airport was built in 1971. It is the busiest airport in Armenia and the second busiest of the Caucasus after Heydar Aliyev International Airport in Baku. An open architectural design competition was held in 1970. The first prize was awarded to a design team that included architects M. Khachikyan, A. Tarkhanyan, S. Qalashyan, L. Cherkezyan, and structural engineer M. Baghdasaryan. Later the project was implemented with modifications to the original design with participation of designers H. Tigranyan, Arthur Meschian.