The Cathedral of St. James in Šibenik is a triple-nave basilica with three apses and a dome. It is the most important architectural monument of the Renaissance in the entire country. Since 2000, the cathedral has been on the UNESCO World Heritage List.
The building of the church was initiated in 1402, though plans on its construction had already begun in 1298, when Šibenik became a municipality. The actual work to transform the older Romanesque cathedral began in 1431. Built entirely of stone (limestone from a nearby stone quarry and marble from the island of Brač), it was completed in three phases, from 1433 to 1441, when the Grand City Council entrusted the work to local and Italian masters Francesco di Giacomo, Lorenzo Pincino, Pier Paolo Bussato, Bonino da Milano, and Giorgio da Sebenico (Juraj Dalmatinac) and to Croatian ones Andrija Budčić and Grubiš Šlafčić.
Its beauty is especially emphasized by the imposing Renaissance dome, the work of Niccolò di Giovanni Fiorentino, which was damaged in the Croatian War of Independence, and nowadays is a special symbol of Šibenik.
The Cathedral is also known for its iconographic innovations, among which a special place is occupied by sculptures of 71 heads on the outside part of the shrine, the work of Georgius Mathei Dalmaticus, for which scientists are still not quite sure who they represent.
The Château d'Olhain is probably the most famous castle of the Artois region. It is located in the middle of a lake which reflects its picturesque towers and curtain walls. It was also a major stronghold for the Artois in medieval times and testimony to the power of the Olhain family, first mentioned from the 12th century.
The existence of the castle was known early in the 13th century, but the present construction is largely the work of Jean de Nielles, who married Marie d’Olhain at the end of the 15th century.
The marriage of Alix Nielles to Jean de Berghes, Grand Veneur de France (master of hounds) to the King, meant the castle passed to this family, who kept it for more than 450 years. Once confiscated by Charles Quint, it suffered during the wars that ravaged the Artois. Besieged in 1641 by the French, it was partly demolished by the Spaniards in 1654, and finally blown-up and taken by the Dutch in 1710. Restored in 1830, it was abandoned after 1870, and sold by the last Prince of Berghes in 1900. There is also evidence that one of the castles occupants was related to Charles de Batz-Castelmore d'Artagnan, the person Alexandre Dumas based his Three Musketeers charictor d'Artagnan on.
During the World War I and World War II, the castle was requisitioned first by French troops, then Canadian and British soldiers. The current owner has restored the castle to its former glory.