Really interesting and surprisingly extensive Tudor and Victorian coastal fort. Loads of rooms to go in, towers to climb and things to explore. And it was deliberately set at one extreme end of a coastal spit, closest to the ocean. The castle is split into two areas, one for the history of the war and the other for the monarchy. Amazing panoramic views from the top of the castle.Very informative and plenty to see.You can either walk about a mile across the beach to reach the castle or pay to take the boat.