Singapore's Supertrees are a group of 18 futuristic-looking trees made of metal and concrete, on which plants climb or are planted. They are equipped with solar panels and water collectors that supply energy and water to the huge greenhouses nearby in Gardens by the Bay, one of the most beautiful gardens in the world. They also play a role in ventilating the greenhouses.

https://www.reflectionsenroute.com/gardens-by-the-bay-singapore/
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