Poznań, today Poland's fifth largest city, is also one of the country's oldest cities, and was an important political and religious center in the early Polish state of the 10th century. Poznań Cathedral is the oldest church in the country, containing the tombs of the first Polish rulers, Duke Mieszko I and King Bolesław I Chrobry.
Poznań Cathedral today, with the Church of Our Lady in the foreground, standing on the site of the original ducal palace
Royal Castle
View of Poznań from the north, with the cathedral island to the left and the walled city, surrounded by suburban settlements, to the right (Civitates Orbis Terrarum, Cologne 1618)
The Jesuit College, built in years 1701-1733
Poznań Fortress, known in German as Festung Posen was a set of fortifications in the city of Poznań in western Poland, built under Prussian rule in the 19th and early 20th centuries. It represents the third largest system of its kind in Europe.
Remains of the Cathedral Lock (Dom Schleuse), part of the original inner ring of defences
Fort III, one of the outer ring of forts built in the late 19th century
Johann von Brese, architect of the fortifications
Ravelin I of Fort Winiary