Flemish architects Antonis Keldermans and Evert Spoorwater designed the "Grote Kerk", the fortifications, the Cisterne and the town hall. During this period of prosperity, the cultural centre was located at Sandenburgh castle, the residence of the noble Van Borsele and Van Bourgondië families. Court painter Jan Gossaert van Mabuse worked here. The poet Adrianus Valerius lived and worked in the city from 1591. In the 17th and 18th centuries, Veere was a prosperous trading city, with about 750 houses inside the city walls then, compared to about 300 .