South Thames Estuary and Marshes South Thames Estuary and Marshes South Thames Estuary and Marshes is a biological Site of Special Scientific Interest which stretches between Gravesend and the mouth of the River Medway in Kent. Part of it is a Nature Conservation Review site, Grade I, and part is a Royal Society for the Protection of Birds nature reserve. It is part of the Thames Estuary and Marshes Ramsar internationally important wetland site and Special Protection Area under the European Union Directive on the Conservation of Wild Birds. Over 20,000 waterfowl use this site, and some species are present in internationally important numbers. There
Canvey Island also home to two Dutch Cottages, one in Haven Road and the other on Canvey Road, which were built during the 17th century by Dutch immigrants working on the sea walls. The cottage at Canvey Road is home to the Dutch Cottage museum. Some of Canvey's lost landmarks include the Goldmine club on Western Esplanade, the original Oysterfleet public house and lighthouse and Cherry Stores. Canvey Island is connected to the mainland in the northwest by two roads with bridges: the A130 (Canvey Way) and the B1014 (Canvey Road). Built in 1972, the A130 (Canvey Way) crosses East Haven Creek