Yes, you generally have to pay for entry to the Moorish Castle in Gibraltar, as it is included in the Gibraltar Nature Reserve "All-In-One" ticket. As of 2026, this ticket costs approximately £19 ($24 USD) for adults and covers almost all major sites on the Rock, including St. Michael’s Cave, the Great Siege Tunnels, the Skywalk, and the Apes' Den. You cannot buy a standalone ticket for just the castle. The Moorish Castle, specifically the "Tower of Homage," is a 14th-century fortification that offers incredible views over the Strait of Gibraltar. It is important to note that if you are a local resident or a worker in Gibraltar with a valid ID, entry is often free. For tourists, the ticket is valid for a single day, so it is best to start early to get the full value of the high entry fee by visiting the other included attractions via the cable car or a guided taxi tour.