From
www.visitkent.co.uk/ Western Heights Local Nature Reserve
"Western Heights - Local Nature Reserve
Western Heights Local Nature Reserve and Area of Outstanding Natural Beauty (AONB) surround the extensive fortifications dating from the earthworks 1779, 1804-1815 fortifications and from the 1850's. There are fine views over the English Channel, Dover Castle and the White Cliffs of Dover. Access via South Military Road (A20 Western Heights roundabout) or via Cowgate steps along the North Downs. Discover the history and wildlife of the site on three waymarked walking routes, contained in a free colour leaflet. Good place to see chalk downland wildflowers and wildlife."
According to this page, again the White Cliffs of Dover in reference to Western Heights, as well as the Castle.