The Cloud Forest in Singapore is another place you must visit. You usually get a combined ticket for the Flower Dome and The Cloud Forest in Gardens by the Bay. While the whole set up is artificial, the greenery still draws you to it.
There are various levels, around six if I recollect correctly. You’re welcomed by a towering waterfall that drenches a curtain of plants, orchids and a variety of other flowers. It’s mighty height ensures that a little water splashes over you if you go closer. Again, it is temperature controlled, so it is slightly more chilly inside.