The Brighton and Lewes Downs Biosphere Reserve (established 2014) is a UNESCO Biosphere Reserve located in Sussex on the southeast coast of England near the city of Brighton and Hove. Forming a central unit of the hills of the South Downs National Park, it is centered on the Brighton chalk block that lies between the River Adur in the west and the River Ouse in the east. Chalk downland makes up the principal terrestrial landscape of the area, bounded at each end by the two river valleys. The coastline is dominated by impressive chalk cliffs in the east and urbanized plains in the west, running to the estuary of the River Adur at Shoreham-by-Sea. The area is nationally and internationally renowned for its arts and culture, distinctive settlements, independent mindset and its links to the su