WWT London Wetland Centre is a wetland reserve managed by the Wildfowl and Wetlands Trust in the Barnes area of the London Borough of Richmond upon Thames, southwest London, England, by Barn Elms. The site is formed of four disused Victorian reservoirs tucked into a loop in the Thames. The centre first opened in 2000, and in 2002 an area of 29.9 hectares was designated a Site of Special Scientific Interest as the Barn Elms Wetland Centre.