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The South Downs is one of the four areas of chalk downland in southern England. They extend from the eastern side of Hampshire through Sussex, culminating in the cliffs at Beachy Head.
The South Downs is England's newest National Park, its designation taking effect on March 31, 2010. There are many Sites of Special Scientific Interest within the park.
The area is relatively unpopulated, although along its southern periphery there is an almost uninterrupted ribbon of seaside towns. It is extremely popular with walkers, having one principal long distance footpath, the South Downs Way, and many interconnecting ones. There are three principal gaps in the upland through which rivers flow; and there are also many dry valleys along its length.
The South Downs have a long history; there are archaeological remains from Neolithic times. Until the middle of the 20th century, sheep-rearing was the main occupation of those living on the Downs.

At 886ft, Butser Hill is the highest point of the South Downs.

Extract from Wikipedia Link

The South Downs Way is a long distance footpath in Southern England and is one of Britain's National Trails. It runs for around 100 miles from Winchester in Hampshire to Eastbourne in Sussex, with a small loop around Eastbourne. The South Downs Way passes through the South Downs, a beautiful area which is now a National Park. The path mainly follows old routes and droveways along the Chalk escarpment. The majority of the path is a bridleway and so can be used by horse-riders and cyclists too.
More information is available from Link

The Belle Tout lighthouse is a decommissioned lighthouse located near Beachy Head. In 1999, the Grade II listed building was moved in one piece to prevent it from succumbing to coastal erosion.
The lighthouse became operational in 1832 and decommissioned in 1902. Since then it has had several owners and uses, it is now a luxury B&B.
Wikipedia: Link