as an interim step, the Indonesian government upgraded the Halim Perdanakusuma airfield for use for passenger services. The old Kemayoran site was closed in 1985, and the land was later used for commercial and housing purposes. Between 1974 and 1975, a Canadian consortium, consisting of Aviation Planning Services Ltd., ACRESS International Ltd., and Searle Wilbee Rowland (SWR), won a bid for the new airport feasibility project. The feasibility study started on 20 February 1974, with a total cost of 1 million Canadian dollars. The one-year project proceeded with an Indonesian partner represented by PT Konavi. By the end of March 1975, the study revealed a plan to build three inline runways, three international terminal buildings, three domestic buildings, and one building for Hajj flights. Three stores for the domestic terminals would be built between 1975 and 1981 at a cost of US$465 million and one domestic terminal including an apron from 1982 to 1985 at a cost of US$126 million. A new terminal project, named the Jakarta International Airport Cengkareng, began. Design The airport's terminal 1 and 2 were designed by Paul Andreu, a French architect who also designed Paris–Charles de Gaulle Airport. One of the characteristics of the airport is the incorporation of the local architecture into the design and the presence of tropical gardens between the waiting lounges. These unique characteristics earned the airport the 1995 Aga Khan Award for Architecture. The runways run northeast–southwest. There are three parallel runways, two on the north side and one on the south side. The airport terminal took the plan of spanning fan, with the main entrances of terminals connected to a series of waiting and boarding pavilions via corridors. These waiting and boarding pavilions are connected to the airplanes through boarding bridges. Terminal 1 is on the southern side of the airport, while Terminal 2 and 3 are on the north side. The airport concept is described as "garden within the airport" or "airport in the garden", as tropical decorative and flower plants fill the spaces between corridors, waiting and boarding pavilions. The boarding pavilions demonstrate local Indonesian vernacular architecture, particularly the roof, in the Javanese stepped-roof pendopo and joglo style. The interior design displays the diversity of Indonesian art and culture, with ethnic decorative elements taken from wooden carvings of Java, Bali, Sumatra, Dayak, Toraja to Papua. Another example is the railings of stairs, doors, and gates, which show