7Prague Castle, Czech Republic
Overlooking the historic city of Prague, Prague Castle is the largest ancient castle complex in the world. Established in the 9th century, it has evolved over time into a vast and varied architectural masterpiece. The castle complex includes Gothic churches, Baroque palaces, gardens, and courtyards, with St. Vitus Cathedral standing as its crowning jewel. The castle has witnessed centuries of Czech history, making it a cultural and political symbol of the nation.