Old St Paul's Cathedral is a name used to refer to the medieval cathedral of the City of London which until 1666 stood on the site of the present St Paul's Cathedral. Built between 1087 and 1314 and dedicated to St Paul, the cathedral was the fourth church on the site at Ludgate Hill. Work began during the reign of William the Conqueror following a devastating fire in 1087 which destroyed much of the city. Work took over 200 years, and construction was delayed by another fire in 1135. The church was consecrated in 1240 and enlarged again in 1256 and the early 14th century. At its completion in the middle of the 14th century, the cathedral was one of the longest churches in the world, had one of the tallest spires and some of the finest stained glass.
