For those of you wondering, this man-made mountain is actually a metallic structure which has a exterior surface that’s planted with orchids, ferns, bromeliads, begonias and pitcher plants. These plants are generally epiphytes – plants which grow on top of other plants, and obtains necesssary moisture and nutrients from the air and rain around it. Because they seldom require soil, they are great for growing on vertical walls.
On a separate tip, photographing the conservatories during cloudy days is an absolute nightmare. The glare from the background will likely murder your shots with over-exposure. Plus the many moving people make HDR very technically challenging. Your best hope short of specialized filters, is to bracket your shots and see which photo is salvageable during post-process, something I don’t normally encourage.