Explore the most historical landmarks in Valletta, each representing a different time period that reveals much about Malta’s capital. You can first expect to browse the 16th-century St. John’s Co-Cathedral, whose severe exterior belies its sumptuous interior. The altars depict watershed events in the life of St. John and Caravaggio’s masterpiece “The Beheading of St. John the Baptist” hangs in the oratory. The Grand Master’s Palace is noteworthy as it was the seat of government from the 16th century until 2015. It was built as the residence for the head of the Order of the Knights of St. John, a Catholic military order that once ruled Malta. Although rebuilt in the 18th century, the Baroque-style Auberge de Castille is one of several surviving auberges or modest inns where the knights lived. For the ultimate view of Old Town and the harbor, you will visit the Upper Barrakka Gardens, a colonnaded greenspace created in 1661.