Make your own way to the Cluny Abbey in Burgundy. Once inside, set out on a self-guided tour and spend as long as you like exploring the magnificent castle. By the end of the 11th century, Cluny Abbey was one of the most important capitals in Christian Europe. It was at the head of a network of nearly 1,400 dependencies and around 10,000 monks all over Europe. In 1088, work began on the "Maior Ecclesia", the largest Romanesque church ever built, with vaulted arches 30 metres high. A century later, the narthex was constructed. The Abbey of Cluny, the 'Maior Ecclesia' or Cluny III, was therefore the largest church in Christendom for nearly 400 years. Today, the parts that remain, such as the Southern arm of the large transept or the small Southern transept, offer an idea of the immensity of this building.