Artist's impression of a breathtaking central waterfall, one of the key features at Project Jewel at Singapore Changi Airport. Changi Airport has inked a joint venture with CapitaMalls Asia to develop the much-touted Project Jewel, which will be the iconic centrepiece of the airport when it is ready in 2018. -- FILE PHOTO: CHANGI AIRPORT GROUP - See more at: http://www.straitstimes.com/breaking-news/singapore/story/changi-airport-and-capitamalls-joint-venture-run-147-billion-project-j#sthash.2VFozRiZ.dpuf