The whole landscape manages rainwater in creative and cost-effective ways too, responding to the challenge of perched groundwater and relatively high receiving watercourses by keeping attenuation feaures shallow and the flow of water on the surface of the landscape wherever possible. A raised wetland rill spanning the buildings entrance collonade receives roof runoff before overflowing through special flow control spouts into the colourful raingardens that surround the main entrance. The permeable carpark cleans runoff and dicharges it slowly, via a biodiverse wetland to the adjacent stream.