Brownsea Castle the castle also has four cannons, probably dating from the 17th or early 18th century. The castle is protected under UK law as a Grade II listed building. Brownsea Castle Brownsea Castle, also known historically as Branksea Castle, was originally a Device Fort constructed by Henry VIII between 1545 and 1547 to protect Poole Harbour in Dorset, England, from the threat of French attack. Located on Brownsea Island, it comprised a stone blockhouse with a hexagonal gun platform. It was garrisoned by the local town with six soldiers and armed with eight artillery pieces. The castle remained in use after
Brownsea Island Scout camp Castle, flanked by two large information posters, and beside it is a copy of B-P's footprint. In May 2000, twenty trees were planted, one for each boys who attended. During the planting ceremony, the Scout Chief Commissioner for England, along with representatives of the Scouts and the Guides, planted the trees on the seaward side of the original site. The trees were designed to act as a permanent memorial to the camp, as well as providing a series of future windbreaks against coastal winds. After the death of owner Charles van Raalte in 1907, his wife Florence stayed on Brownsea