Sens Cathedral
A primitive building was located at the present location of the cathedral (6th-7th century). In 1122, the architect Henri Sanglier began the reconstruction of the Carolingian cathedral to build one of the first Gothic buildings. The church was consecrated in 1164 by the Pope. The building was completely completed at the end of the 13th century. Chapels were added in the 13th and 14th centuries, then a transept in the 15th and 16th centuries.