Singapore had its international airport at Kallang and Paya Lebar. But it expanded so rapidly that the Singapore government worried about having not enough space for airport to grow bigger. There were many proposals for a new location and the Singapore government chose Changi in the end.
Other places in Changi
There are also other places in Changi, for example the Changi Prison, which had the Japanese Prisoner-of-war (POW) camps. These camps had the Allied powers prisoners staying there.
There is also the Changi Air Base, Changi Naval Base, Changi Point Ferry Terminal and Changi Ferry Terminal.