Welcome to Prague Castle, a sprawling complex of palaces, churches, and gardens that feels like a city within a city. You can wander the courtyards for free, but the real magic is inside the ticketed areas, especially the breathtaking St. Vitus Cathedral. Wear comfortable shoes, as you'll be walking over ancient cobblestones and up gentle slopes to be rewarded with the most incredible panoramic views of Prague's famous red rooftops.