At the end of its own peninsula stands this formidable castle, built by Henry VIII in the 1540s and improved by his daughter Elizabeth I. You can explore the defenses developed over the centuries. In the Royal Artillery Barracks, the Pendennis Unlocked exhibit explores the castle's history and its connection to Cornwall and England. The castle has sweeping views over the English Channel and across to St. Mawes Castle, designed as a companion fortress to guard the roads. There are free tours of the Half Moon Battery and regular performances, historical reenactments, and shows for kids.