The Bismarck Tower in Zielona Góra, Poland (until 1945 Grünberg in Schlesien, Lower Silesia, Germany) is one of the best-preserved Bismarck towers outside of present-day Germany. It is also called the Wilkanowska Tower, after the hill on which it stands. Despite its name, the tower is actually located in the village of Wilkanowo, Lubusz Voivodeship (Wittgenau in German), 6 km southwest of Zielona Góra. It is still in use as an observation tower and radio mast.