WM VPRO is an exploration of the landscape of the interior. It's about the most concentrated office spaces imaginable and a minimum of corridors. Hannover has no facade as such. The exterior is entirely open. Basically, there are eight different landscapes, one above the other.
Visitors ascend by elevators to a windmill park on a lake, featuring six to nine working windmills.
Then they go down by stairs though the various levels, past exhibits and examples of vegetation that represent several of Holland's major ecosystems. We came up with about 25 possible landscapes, and then culled it down to the final eight. On the next floor down is a forest, a quarter-acre swath of Dutch woodland. And under that is a sand dune environment made out of concrete, beneath which, at ground level, is a grotto created by the same forms, which serve as an undulating ceiling. The idea is to have a different type of structure for each floor.