 As a consequence of fires, the greatest part of the wooden towns which have been preserved date from the nineteenth century.For example, the town of Oulu was founded in 1605 by Charles IX beside a medieval castle and, typical for its time, grew organically.In 1651 Claes Claesson drew up a new plan comprising a regular street grid, his proposal outlined on top of the existing "medieval" situation, but still retaining the position of the existing church.