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 January 1908, and later appeared in book form. Scouting began to spread throughout Great Britain and Ireland, then through the countries of the British Empire, and soon to the rest of the world. A reunion of the original campers was held in 1928 at the Chief Scout's home at Pax Hill in Hampshire. A commemorative stone by sculptor Don Potter was unveiled on 1 August 1967 by the Hon. Betty Clay née Baden-Powell, younger daughter of Lord and Lady Baden-Powell. It is located near the encampment area. There is also a small bust of B-P outside a wall of Brownsea