Squire's Castle, while intact, is just a shell of a building. Many weddings take place in the castle, and even more wedding pictures. However, most of the time, Squire's Castle is open to the public to explore, and enjoy the structure while picnicking, playing, and walking in the area.
Behind Squire's Castle are two trailheads, one which just is a short circle behind the castle, and another which goes up a steep hill into the forest behind the castle, then joins another trail which is about a 1 1/2 mile loop. This is a great hike for the intermediate walker or hiker, and the trail is always kept in excellent condition. One time I hiked this trail with my family and a huge tree had fallen across the trail. The only way to continue was to climb over the tree. By the next week, the park workers had cut a trial wide path through the tree and left the rest there where it had fallen.
Everything is left as natural as it can be, while making sure that the trails are safe for beginners.