In the year 1666, the Great Fire of London destroyed more than 13,000 properties covering an area of 436 acres. The narrow pathways and streets that snaked through the city made it easy for the fire to spread quickly among buildings that were made mostly of wood. Immediately after the flames died down, King Charles II started reviewing architectural plans that would have completely redesigned the city. He issued a Royal Proclamation on the 13th of September: