Elizabeth Castle, located on a tidal island in St. Aubin's Bay, is accessible by foot during low tide or via an amphibious vehicle at high tide. Exploring the castle, with its historical exhibits and stunning views, typically takes around 2-3 hours. Solo exploration is easily manageable with informative signage, but guided tours offer deeper insights into the castle's history and significance. Be mindful of tide times, as access is restricted during high tide except by the ferry. The entry fee is approximately £15-£20. Accessibility within the castle may be limited due to its historic structure.