Plan oblężenia Torunia w roku 1658 z wiedeńskiego archiwum wojny

The plan of the siege of Torun, preserved in the Vienna Archive of War (Kriegsarchiv) is the perfect documentation of one of the most important events of the Polish-Sweden war of 1655-1660. It includes a detailed presentation of the city and its suburbs, along with numerous details and the positions occupied by the besieging army (in particular the emperor’s army). It includes a key with 91 entries. It is signed by its author – Johan Eusebius Mayer. The document is a valuable source for research on Torun’s fortifications during the times of the Swedish wars. It has been established that the plan was a basis for the so called Italian plan of the siege of Torun – the etching included in the history of Emperor Leopold I published in the Italian language in 1669.