The airport was inaugurated on 20 April 1925 and was one of the first civil airports in the world. It consisted of a large, impressive terminal built of wood, a couple of hangars, a balloon mast, a hydroplane landing stage and a few grassy meadows that could be used as runways. The grass on the runways was kept short by sheep, which were shepherded away before take-offs and landings. From 1932 to 1939, takeoffs and landings increased from 6,000 to 50,000 and passenger number increased to 72,000. Between 1936 and 1939, a new terminal was built, considered one of the finest examples of Nordic functionalism. The terminal was designed by Vilhelm Lauritzen, who was considered a pioneer among architects, in terms not only of architecture and construction, but also of service and passenger comfort. In the years of World War II, the Copenhagen airport was closed for civil operations except for periodic flights to destinations in Sweden and Nazi Germany (including German-occupied Austria). In the summer of 1941 the first hard-surface runway opened. It was 1,400 metres (4,600 ft) long and 65 m (213 ft) wide. When World War II ended in May 1945, Copenhagen had the most modern international airport in Europe, because the airport remained untouched by actual acts of war. On 1 August 1947, Scandinavian Airlines (SAS) was founded, an important event for the Copenhagen Airport, as Copenhagen was to be the main hub for the airline. Traffic increased rapidly in the first years SAS operated. In 1948, Copenhagen airport was third largest airport in Europe with 150 daily takeoffs and almost 300,000 passengers for the year. The airport continued its rapid growth. The terminal was expanded several times and new hangars were erected. By 10 May 1960, when the new airport terminal (now Terminal 2) was inaugurated, the daily number of jet operations had increased to 28, and still traffic kept on growing. The large new airport terminal soon became too small, and in 1969 yet another huge expansion programme was launched. Domestic traffic was relocated to a new domestic terminal (the eastern part of Terminal 1). The (current) international terminal was supplemented with a new pier (C) and a separate arrivals hall (the building between Terminals 2 and 3). A new control tower and 3,600 metres (11,800 ft) of additional runways allowed take-offs and landings to take place at the same time. When the comprehensive expansion was completed in 1972, the number of take-offs and landings exceeded 180,000 and there were more than eight million passengers. The expansion of the airport began in 1982, after the necessary period of planning. The intention was not to build Europe's largest airport, but to build transit passengers' favourite airport. A stay at the airport was supposed to be an integral part of the travel experience. Efficiency and precision were obvious demands, but focus was also on generating an oasis where international travellers could relax: beautiful architecture, Scandinavian design, and pleasant, light, and comfortable surroundings with plenty of shops, restaurants, and other facilities providing enjoyment and pleasure. The new cargo terminal was built in the eastern area of the airport. From 1984, SAS operated a marine link from the airport to Malmö, across the Øresund to a dedicated terminal in Malmö where luggage could be checked in. From 1984 to 1994, the service was operated by hovercraft, whereas from 1994 to 2000 catamarans were used. The marine link closed in 2000 due to the opening of the Øresund Bridge. A number of important construction projects were completed in 1998: a pier connecting the domestic and international terminals; a new arrivals hall; new modern baggage handling facilities; an underground railway station with two large underground parking facilities with 2400 spaces opens; and above it all the spacious and impressive delta-shaped terminal (Terminal 3) with 17 million passengers capacity.