Tvrđa is a historic fortress located in the city of Osijek, Croatia. Built in the 18th century, it served as a military stronghold and is known for its well-preserved baroque architecture. The fortress features thick walls, bastions, and a network of streets that reflect its strategic importance during various conflicts. Today, Tvrđa is a popular tourist destination, attracting visitors with its charming squares, museums, and cultural events. The area is also home to several restaurants and cafes, making it a vibrant part of Osijek that showcases the city's rich history and cultural heritage.