The sinuous curve of John Pawson's bridge within Kew's Royal Botanic Gardens is a graceful delight. While a treat to look at, I'm intrigued by the way it controls the eye of the occupier of the space; it forces wider vantage points to be enjoyed. The guardrails are constructed of louvred panels to lighten the weight of the structure to insinuate that it is floating on water. Complete beautility.