The Amsterdam City Archive has an interesting exhibition about this expension with original maps, architectural plans and cityscapes to tell the story of an unique period in the Golden Age, the era in which the city acquired the half-moon shape for which it has become famous.
The Blue Bridge.
Around 1585 Amsterdam had a population of 30.000. A hundred years later, that figure had increased by a factor of more than six, to over 200.000. In the Golden Age hundreds of thousands of people flocked to Amsterdam in search of work.
A big fire spread to some fifty houses and tanneries after lighting struck on July 27th 1679.
Old handwritings from 1613.
Some pottery from the 17th century found in the grounds of Amsterdam.