What happend in the great fire of London?

The Great Fire of London was in September 1666 following a long hot dry summer. The houses at that time were mostly made of wood and of tiered construction ie each floor overlapped the one below so that when they were at the fourth floor it was nearly possible to shake hands with someone leaning out of the house opposite. The fire therefore spread rapidly from house to house. Although 13,200 houses were destroyed and 70,000 people were left homeless, there were very few casualties.