In the central square of Koper, Tito Square, are the beautiful Cathedral of the Assumption of Mary. The Cathedral of the Assumption of Mary, built in the 15th century in the Gothic style, was later completed in the Renaissance style. In the 18th century, the interior was enriched in Baroque style. It houses many valuable works of art by Venetian masters, including Vittorio and Benedetto Carpaccio, Antonio Zanchi and others. In its treasury, the cathedral also holds a number of valuables, including a Byzantine ivory chest ( 9th to 12th centuries), a chalice and a large monstrance (card) from the 15th century, bust of St. Nazarias and the antiphonarium of Koper miniaturist Nazari (Nazario da Giustinopoli). On the facade of the cathedral lean the city tower. It was part of a Romanesque fortress that dates from the 15th century to 17th century. Later it has been transformed into a bell tower and today is a striking vantage point offering a magnificent view of the entire Koper Bay and the nearby hinterland.