The medieval Cathedral of Our Lady of Chartres, (French: Cathédrale Notre-Dame de Chartres), a Latin Rite Catholic cathedral located in Chartres, about 80 kilometres (50 mi) southwest of Paris, is considered one of the finest examples of the French High Gothic style. The current cathedral, mostly constructed between 1193 and 1250, is one of at least five that have occupied the site since the town became a bishopric in the 4th century. What makes the cathedral special from an art historical viewpoint is its exceptional state of preservation. The majority of the original stained glass windows survive intact, while the architecture has seen only minor changes since the early 13th century. The building's exterior is dominated by heavy flying buttresses which allowed the architects to increase the window size significantly, while the west end is dominated by two contrasting spires — one, a 105 metre (349 ft) plain pyramid dating from the 1140s, and the other a 113 metre (377 ft) tall early 16th century Flamboyant spire on top of an older tower. Equally notable are the three great facades, each adorned with hundreds of sculpted figures illustrating key theological themes and narratives. Since at least the 12th century the cathedral has been an important destination for travellers - and remains so to this day, attracting large numbers of Christian pilgrims, many of whom come to venerate its famous relic, the Sancta Camisa, said to be the tunic worn by the Virgin Mary at Christ's birth, as well as large numbers of secular tourists who come to see this UNESCO World Heritage Site.