There are two, one with a tropical rainforest climate, and relevant plants, crops, and even birds,
while the other has a Mediterranean climate (including South Africa, California and parts of Western Australia). It is much smaller than the other, but I think I liked it better. It smelt wonderful.
We drove home rather alarmingly (tiny roads) via Mevagissey, and Tesco's in Truro, where I stayed in the van and watched the swans on the river