Die Festung Weichselmünde / Fort Carré Twierdza Wisloujscie an dem Nebenfluss Tote Weichsel in Danzig / Gdansk in Pommern / Pomorskie, Polen. The Wisloujscie fortress at the subsidiary stream Martwa Wisla in Gdansk in the Pomeranian Voivodeship / Pomorskie, Poland.