 Many consider his most important commission of the 1560s to be the monumental Map of the Liberty of Bruges.Accounts of that period allow us to trace Pourbus' steps almost on a daily basis during the many days he spent on this work.Information that they provide include how he adapted existing materials or created new ones, who worked on the map with him, who came along with him (such as lawyers, surveyors, and magistrates), and how he repeatedly presented his progress to the client.