The Waterlily House is also a listed building and dates back to 1852. It is Kew’s hottest and most humid environment, housing tropical, ornamental aquatic plants and climbers. There are Nymphaea waterlilies, a giant Victoria cruziana, sacred lotus, papyrus, gourds, loofah, as well as economically important plants including rice, bananas, taro, sugar cane and lemon grass.