Koper Cathedral, also known as Cathedral of the Assumption of the Blessed Virgin Mary, is located in the city of Koper, Slovenia. This Romanesque-style cathedral was built in the 12th century and features a stunning bell tower that stands at 54 meters tall. The interior is adorned with beautiful frescoes and intricate altars, showcasing the rich history of the region. The cathedral serves as the seat of the Diocese of Koper and is an important religious site for the local community. Its architectural design reflects a blend of different styles, including Gothic and Baroque, making it a significant landmark in Slovenia.