Royal Castle in Warsaw, 1641. Prince-Bishop's palace situated on the northern bastion of the Warsaw's Royal Castle fortifications.
Wilhelm Hondius (1597-1652)
1641
<i>Warszawa w latach 1526-1795</i> (Warsaw in 1526-1795), vol. II, edited by Stefan Kieniewicz, Warsaw, 1984, <a href="//commons.wikimedia.org/wiki/Special:BookSources/8301033231" title="Special:BookSources/8301033231">ISBN 8301033231</a>.