Some gabions and EPDM for you Landscape Architects, ooh!
However, there were a couple of large screens cleverly located in the river with banks either side so people could view them easily. We were there in the first week before the atheletics stadium had opened and people were already trampling the planting and sitting in the bioswales! "Mum, my bum feels a bit wet!" Still, as long as we can all herd together and watch tv.