The 18th century Lublin in the eyes of a military engineer. Fortifications and security measures for the negotiations on the map of Lublin created by C. d’Örken and modern evidence confirming their existence

Abstract Just as contemporary cartographic works, old maps were usually made for specific purposes, e.g. related to taxation, propaganda or military objectives. C. d’Örken’s map of Lublin of 1716 is an example of a cartographic work created for military purposes, as it was made in the context of negotiations of the Tarnogród Confederation. The author of the map focused on the thematic content – he marked control zones, as well as military outposts, and accommodation sites. In many instances, the base content is presented with little attention to detail. There are a few exceptions to this rule, with fortifications being the most noticeable one. It was most likely motivated by the author’s profession, as he was a military engineer. Still, although Lublin has never been a particularly well-fortified city, the aforementioned content of the map perfectly reflects not only the former shape of the city space, but also its contemporary organisation. This article, due to its detailed description of selected works and the methodology involving the use of old cartographic materials, can be used as an important source material for archaeological, restoration and regeneration works.