Ravenna is a city in northeastern Italy, known for its rich history and stunning mosaics. It was once the capital of the Western Roman Empire and later the Byzantine Empire. The city is famous for its well-preserved early Christian monuments, which are recognized as a UNESCO World Heritage Site. Visitors to Ravenna can explore several important sites, including the Basilica di San Vitale and the Mausoleum of Galla Placidia. The intricate mosaics found in these buildings showcase vibrant colors and detailed designs, reflecting the artistic achievements of the Byzantine Empire. Ravenna's unique blend of history and art makes it a popular destination for tourists.