The Fortress of Saint Elmo is a historic fortification located in Valletta, Malta. Built in the 16th century by the Knights of St. John, it was designed to protect the Grand Harbour and the city from naval attacks. The fortress played a significant role during the Great Siege of Malta in 1565, showcasing its strategic importance. Today, the fortress is a popular tourist attraction, offering stunning views of the surrounding area. It houses a museum that highlights its military history and the various battles it endured. The site is a testament to the architectural and historical legacy of the Knights of St. John.