Because the medieval city of Enschede (my hometown) was largely built of wood and stone houses were the exception, fire was a constant risk in the early years and a series of fires in 1517, 1750 and again on 7 May 1862 struck the city and burned down the biggest part of the city.
My daughter and her partner bought a house last year in the eldest street in town. Their house was built in 1902. They have stripped the house and isolated it from top to bottom and now have the only house in the street which has isolation ;-) This picture was taken just after they had bought the house.
If you are interested in the history of this town you can follow this link: