This map was printed in Germany in 1670 and shows the area burnt by the great fire in 1666. At the bottom of the map is a grid-like street plan, which was one of the suggestions as to how London should be rebuilt. It is believed to be Robert Hooke's design. Though his plan was never built, Hooke became one of the City surveyors. He worked with five men to survey the ruins, work on the new building regulations and make changes to the old streets. Due to the need to rebuild as quickly and cheaply as possible, it wasn't possible to create a new city on an idealised plan. Instead, new houses were built on what was mostly the old medieval street plan, though some roads were widened and two new streets were constructed.