fastcompany:

The man-made mechanical forest, five years in the making, consists of 18 supertrees that act as vertical gardens, generating solar power, acting as air venting ducts for nearby conservatories, and collecting rainwater. To generate electricity, 11 of the trees are fitted with solar photovoltaic systems that provide lighting and assist with water flow in the conservatories below. 

Singapore’s Supertrees Light Up The Night