Trakai Castle is a historic fortress located on an island in Lake Galvė in Lithuania. Built in the 14th century, it served as a residence for the Grand Dukes of Lithuania and played a significant role in the region's history. The castle features Gothic and Renaissance architectural styles, with red brick walls and impressive towers. Today, Trakai Castle is a popular tourist destination, attracting visitors with its picturesque setting and rich history. The castle houses a museum that showcases artifacts from the Grand Duchy of Lithuania, providing insights into the culture and heritage of the area.