On the practical side, the South Bank is already thronged with tourists, but what is there to do or see near Temple? It is an exclusive lawyers' enclave. From a sustainability perspective, it is not clear how all the plant life on the bridge will be kept alive. There is to be an irrigation system installed - in case of "drought conditions". But surely there will always be a drought on this bridge, because its surface area is simply not large enough to absorb the amounts of water necessary for the volume of vegetation planned. What's more, the bridge does not make use of existing redundant infrastructure, as the High Line does, but at a projected £175m it is a massively expensive piece of new engineering.