"With its domed greenhouses of epic proportions dotted across some 100 hectares (250 acres), the sustainable Gardens by the Bay are educational and fun. The Cloud Forest is a misty, 42-meter-high (138-foot-high) “mountain” that re-creates tropical highlands; visitors use ramps to explorearound and through them. A biosphere of Mediterranean and desert plants, including huge baobab trees, makes up the Flower Dome. Outdoors, guests walk on suspended walkways between steel-frame “Supertrees” that are covered in solar-powered lights."