In 1665 Christopher Wren designed a plan for the renovation of the St. Paul's Cathedral, which was starting to fall into decay. But disaster struck again on the night of September 2, 1666, when the Great Fire of London destroyed 4/5th of all of London, wiping 13,200 houses and 89 churches, including the St. Paul's Cathedral, off the map.In 1669, three years after the fire, Christopher Wren was appointed 'Surveyor of Works' and was tasked with the construction of a new church to replace the destroyed Gothic cathedral.His first design was deemed too modest. In his second design, known as the 'Great Model', the cathedral was shaped like a Greek cross, with a portico, Corinthian columns and a striking large dome, which would be the world's largest after Michelangelo's dome at the St. Peter's Basilica in Rome. This design was rejected as well; the Bishop considered it unsuitable for large processions. Wren suggested a third design, this time with a larger nave and smaller dome, which was accepted in 1675. After the approval however Wren enlarged the dome and made several other adjustments so that the built cathedral now resembles the 'Great Model' and not the approved design.
The cathedral was built in a relative short time span: its first stone was laid on June 21, 1675 and the building was completed in 1711.