text: The Rainforest Biome, covers  and measures  high,  wide, and  long. It is used for tropical plants, such as fruiting banana plants, coffee, rubber, and giant bamboo, and is kept at a tropical temperature and moisture level.
  The Mediterranean Biome covers  and measures  high,  wide, and  long. It houses familiar warm temperate and arid plants such as olives and grape vines and various sculptures.
  The Outdoor Gardens represent the temperate regions of the world with plants such as tea, lavender, hops, hemp, and sunflowers, as well as local plant species.
  The covered biomes are constructed from a tubular steel (hex-tri-hex) with mostly hexagonal external cladding panels made from the thermoplastic ETFE. Glass was avoided due to its weight and potential dangers. The cladding panels themselves are created from several layers of thin UV-transparent ETFE film, which are sealed around their perimeter and inflated to create a large cushion. The resulting cushion acts as a thermal blanket to the structure. The ETFE material is resistant to most stains, which simply wash off in the rain. If required, cleaning can be performed by abseilers. Although the ETFE is susceptible to punctures, these can be easily fixed with ETFE tape. The structure is completely self-supporting, with no internal supports, and takes the form of a geodesic structure. The panels vary in size up to  across, with the largest at the top of the structure.