York Minster. The Cathedral and Metropolitical Church of Saint Peter in York, commonly known as York Minster, is the cathedral of York, England, and is one of the largest of its kind in Northern Europe. The minster is the seat of the Archbishop of York, the third-highest office of the Church of England, and is the mother church for the Diocese of York and the Province of York. It is run by a dean and chapter, under the Dean of York. The title minster is attributed to churches established in the Anglo-Saxon period as missionary teaching churches, and serves now as an honorific title. Services in the minster are sometimes regarded as on the High Church or Anglo-Catholic end of the Anglican continuum. The minster, devoted to Saint Peter, has a very wide Decorated Gothic nave and chapter house, a Perpendicular Gothic quire and east end and Early English North and South transepts. The nave contains the West Window, constructed in 1338, and over the Lady Chapel in the east end is the Great East Window, the largest expanse of medieval stained glass in the world. In the north transept is the Five Sisters Window, each lancet being over 53 feet high. The south transept contains a rose window, while the West Window contains a heart-shaped design colloquially known as The Heart of Yorkshire. A bishop of York was summoned to the Council of Arles in 314 indicating the presence of a Christian community in York at this time; however, archaeological evidence of Christianity in Roman York is limited. The first recorded church on the site was a wooden structure built hurriedly in 627 to provide a place to baptise Edwin, King of Northumbria. Moves toward a more substantial building began in the decade of the 630s. A stone structure was completed in 637 by Oswald and was dedicated to Saint Peter. The church soon fell into disrepair and was dilapidated by 670 when Saint Wilfrid ascended to the See of York. He repaired and renewed the structure. The attached school and library were established and by the 8th century were some of the most substantial in Northern Europe. In 741, the church was destroyed in a fire. It was rebuilt as a more impressive structure containing thirty altars. The church and the entire area then passed through the hands of numerous invaders, and its history is obscure until the 10th century. There were a series of Benedictine archbishops, including Saint Oswald of Worcester, Wulfstan and Ealdred, who travelled to Westminster to crown William in 1066. Ealdred died in 1069 and was buried in the church. The church was damaged in 1069 during William the Conqueror's harrying of the North, but the first Norman archbishop, Thomas of Bayeux, arriving in 1070, organised repairs. The Danes destroyed the church in 1075, but it was again rebuilt from 1080. Built in the Norman style, it was 111 m long and rendered in white and red lines. The new structure was damaged by fire in 1137 but was soon repaired. The choir and crypt were remodelled in 1154, and a new chapel was built, all in the Norman style. The Gothic style in cathedrals had arrived in the mid 12th century. Walter de Gray was made archbishop in 1215 and ordered the construction of a Gothic structure to compare to Canterbury; building began in 1220. The north and south transepts were the first new structures; completed in the 1250s, both were built in the Early English Gothic style but had markedly different wall elevations. A substantial central tower was also completed, with a wooden spire. Building continued into the 15th century. The Chapter House was begun in the 1260s and was completed before 1296. The wide nave was constructed from the 1280s on the Norman foundations. The outer roof was completed in the 1330s, but the vaulting was not finished until 1360. Construction then moved on to the eastern arm and chapels, with the last Norman structure, the choir, being demolished in the 1390s. Work here finished around 1405. In 1407 the central tower collapsed; the piers were then reinforced, and a new tower was built from 1420. The western towers were added between 1433 and 1472. The cathedral was declared complete and consecrated in 1472. The English Reformation led to the looting of much of the cathedral's treasures and the loss of much of the church lands. Under Elizabeth I there was a concerted effort to remove all traces of Roman Catholicism from the cathedral; there was much destruction of tombs, windows and altars. In the English Civil War the city was besieged and fell to the forces of Cromwell in 1644, but Thomas Fairfax prevented any further damage to the cathedral. Following the easing of religious tensions there was some work to restore the cathedral.