This famous photograph, St Paul's Survives, was snapped from the roof of the Daily Mail building by Herbert Mason.
On the night of Dec. 29-30, 1940, London suffered an inferno dubbed the Second Great Fire of London, timed by German raiders to coincide with low tide on the River Thames to impair fire fighting.
Nazi bombers dropped more than 24,000 high explosives and 100,000 incendiaries, destroying historic buildings and churches and gutting the medieval Great Hall of the City's Guildhall.
The destruction stretched south from Islington to St Paul's Cathedral, scorching an area greater than that of the Great Fire of London of 1666.
As the flames approached St Paul's Cathedral, a symbol of London's glory, Prime Minister Winston Churchill called of the Fire Brigade and St. Paul's fire watch to save the landmark.
The Second Great Fire of London claimed the lives of 14 firefighters and injured 250 others.
Today a fire service memorial stands on the cathedral's grounds.