Changi is a place in Singapore that have Changi Airport , Singapore Expo , Changi Air Base and Changi Naval Base . Changi is an area at the eastern end of Singapore . It is now the site of Singapore Changi Airport\/Changi Air Base , Changi Naval Base and is also home to Changi Prison , site of the former Japanese Prisoner of War Camp during World War II which held Allied prisoners captured in Singapore and Malaysia after Singapore 's fall in February 1942 .