<human>:  With regards to the history of Victorian London, when did the Great Fire of London start?
<bot>: The Great Fire of London started on 2nd September 1666. It was started by a candle in a bakery shop in Pudding Lane, which was located in the city’s financial district. The bakery was selling bread, and a customer lit a candle to toast the bread. The fire spread quickly through the city, burning for three days and destroying more than 13,000 houses.