Trakai Island Castle is a historic fortress located on an island in Lake Galvė, near the town of Trakai in Lithuania. Built in the 14th century, it served as a residence for the Grand Dukes of Lithuania. The castle is known for its striking red brick architecture and picturesque setting, surrounded by water and lush greenery. Today, Trakai Island Castle is a popular tourist destination, attracting visitors with its rich history and beautiful scenery. The castle houses a museum that showcases artifacts from the Grand Duchy of Lithuania, providing insights into the region's medieval past and cultural heritage.