The style was most prominently used in the construction of cathedrals and churches. The defining features of Gothic architecture are pointed arches, rib vaults, buttresses, and extensive use of stained glass. This photograph shows the Gothic cloisters at Gloucester Cathedral, which have the earliest surviving fan vaults in the country, designed between 1351 and 1377. These cloisters were used as a backdrop in three of the Harry Potter films.Photograph credit: Christopher J. T. Cherrington