A large pond is installed in the center, and water trenches along the south face and east face,
and planting areas along the north face and west face.
It is a treasure chest of plants which like high temperature and humidity. The collections of
Araceae, Musaceae, and
Amaryllidaceae are planted here.
The temperature of the pond is kept around 29 °C to grow various tropical plants,
and at its center area, Philodendron 'Evansii'
hangs down its aerial root system which is amazingly handsome.
Relatives of Zingiberaceae and
Heliconiaceae grow around to add brilliant colors.