Most interesting benches demands a permission. 
Bromeliads and succulents in open space during summer. I visited in 2006.

The Succulent-Greenhouse is open to the public, and are also very interesting.

Succulent-Nursery-Greenhouses are open on demand.

Small succulents in the show-case.

African-succulents-greenhouse is open to the public.

One of Europe's largest Madagascar-Collection is open on demand.

Caudiciforms in open space during summer.

Caudiciforms-Nursery.

It is a large garden, with lots of other plants. Victoria-greenhouse is open to the public.
Victoria cruziana shows leaves with a diameter more than 1,5 m .