Tintagel Castle in Cornwall is steeped in legend and mystery; said to be the birthplace of King Arthur. The castle also features in the tale of Tristan and Isolde and has a history stretching as far back as the Romans. (http://www.english-heritage.org.uk)
Dover Castle, Kent - one of the best castles I have visited and so much history.....used through WWII for many different purposes......there are 4 miles of underground tunnels that were used as a hospital during WWII.....built on the White Cliffs of Dover
Silbury Hill, Avebury. The largest man-made mound in Europe, mysterious Silbury Hill compares in height and volume to the roughly contemporary Egyptian pyramids. Probably completed in around 2400 BC, it apparently contains no burial. Though clearly important in itself, its purpose and significance remain unknown. There is no access to the hill itself. Distance from Shaftesbury to Avebury is 42 miles More
The cliffs above the beach are a noted source of fossils from the Jurassic period. Fossil-hunters walk the beaches between Lyme Regis and Charmouth, but have to be wary of tides and landslips. The Dorset and East Devon Coast World Heritage Site covers 3 geological time periods; the Triassic, Jurassic and Cretaceous. These are showcased in the 3 rock types found along the coast.