Green Island (Dorset) Green Island (Dorset) Green Island is an island in Poole Harbour in the English county of Dorset. It lies in the central south part of the harbour, south of Brownsea Island and Furzey Island. The island is an Area of Outstanding Natural Beauty (AONB), Site of Special Scientific Interest (SSSI) and Special Protection Area (SPA). The island covers approximately at low tide while the central raised part of the island is approximately . The island is covered in extensive woodland in the centre, made up of Scots pine with several small zones of heathland. The island also has a large
Brownsea Island Henry VIII recognised the island's strategic importance of guarding the narrow entrance to the expanding port of Poole. As part of a deterrent to invasion forces from Europe, the island was fortified in 1547 by means of a blockhouse, which became known as Brownsea Castle. In the following centuries, the island passed into the hands of a succession of various owners. In 1576, Queen Elizabeth I made a gift of Brownsea to one of her court favourites and rumoured lover, Sir Christopher Hatton. During the English Civil War, Poole sided with Parliament and garrisoned Brownsea Castle. Colonel Thomas Pride, the