Most often the Patriarchal Cathedral Basilica of Saint Mark is known as the Basilica of Saint Mark. It is the cathedral church of the Roman Catholic Archdiocese of Venice in northern Italy. It is the most famous of the churches in the city and one of the best known examples of Byzantine-Italian architecture. It is located at the eastern end of Piazza San Marco, adjacent and connected to the Ducal Palace. It was originally the Doge’s Chapel, and has been the city’s only cathedral since 1807. The building was created in Gothic style.