Jan Baptist the Venetian (Italian)
The barbican was erected in place of an older gate to protect Nowomiejska Street. It was designed in the 1540s by Jan Baptist the Venetian, an Italian Renaissance architect who lived and worked in the Mazowsze region of 16th century Poland.
It was almost completely destroyed in the second world-war and reconstructed soon after ww2 with materials of other Gothic buildings in Poland. Today the Warsaw Barbican is a major tourist attraction.