During the Second World War, the facilities were used by the military. Mail, perishable freight and passenger operations began in 1947 from buildings on the north side of the airport. The passenger terminal (now Terminal 1) on the south side was completed during the Second World War in the manner of a then-modern European railway terminus to designs by the architect Ivan Marangozov. It opened after several years of delay in 1947. The structure comprised a government wing to the west, an international handling area in the middle, and a domestic handling area to the east. At that time, it was planned that the airport would eventually have two intersecting runways at a 30-degree angle to each other.