Designed by Helmut Jahn of Murphy/Jahn Architects and constructed primarily by ITO JV, the airport has the world's tallest free-standing control tower (132.2 metres / 434 feet), and the world's 4th largest single-building airport terminal (563,000 square metres / 6,060,000 square feet). Suvarnabhumi is the 3rd busiest airport in Asia, and the busiest in the country, having handled 42.7 million passengers in 2010, and is also a major air cargo hub.
