Many buildings of this ancient city steeped in history were built during the early Middle Ages. Utrecht was considered the most important city of the Netherlands, while in the period of the golden age of the Netherlands was not pressed Amsterdam. He was and remains the Archdiocese of Utrecht, the supreme leader of the Catholic Netherlands. Utrecht University is the largest in the Netherlands. One of the unique features of this city - a system of internal channels embankments. Before the city was established a complete system of channels, the Rhine River flowed through the city center. The most remarkable of the historic buildings is the Gothic cathedral of St. Martin, the construction of which began in 1254 and lasted nearly 200 years.