Deal Castle, UK is a 16th century coastal artillery fort built by Henry VIII. Deal Castle is built of Kentish ragstone brick, and Caen stone taken from nearby religious houses after the Dissolution of the Monasteries. Whether by design or coincidence, the fortress is shaped like a Tudor rose.
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)
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