A part of the South Downs, Willingdon Down is a designated Site of Special Scientific Interest. This is of archaeological interest due to a Neolithic camp and burial grounds. The area is also a nationally uncommon tract of chalk grassland rich in species. Another SSSI which partially falls with the Eastbourne district is Seaford to Beachy Head. This site, of biological and geological interest, covers the coastline between Eastbourne and Seaford, plus the Seven Sisters country park and the Cuckmere valley. Several nature trails lead across the Downs to areas such as the nearby villages of East Dean and Birling Gap, and landmarks like the Seven Sisters, Belle Tout Lighthouse and Beachy Head.