Singapore will build a new terminal that will double the capacity of Changi Airport in a bid to retain its edge as a regional aviation hub. Prime Minister Lee Hsien Loong said on Sunday that Construction work will begin soon and will be completed in 12 to 15 years”. The terminal is actually a whole airport by itself. The cost of the new facility weren’t revealed, but it would include a third runway that would double the capacity of Changi, which handled 51.2 million passengers last year. Changi Airport, named the world’s best by Britain-based consultancy Skytrax this year, currently has three terminals with a total capacity of 66 million passengers a year.