Three Emperors' Corner

Three Emperors' Corner (Polish: Trójkąt Trzech Cesarzy, German: Dreikaisereck, Russian: Угол трёх императоров, romanized: Ugol tryokh imperatorov) is a former tripoint at the confluence of the Black and White Przemsza rivers, near the towns of Mysłowice, Sosnowiec and Jaworzno in the present-day Silesian Voivodeship of Poland.

The left bank of the White Przemsza now belonged to the Austrian Grand Duchy of Cracow (part of the Austro-Hungarian monarchy from 1867).

While the Upper Silesian right bank of the Black Przemsza had been within the boundaries of the Holy Roman Empire since 1335 and passed in 1742 over from Austria to Prussia, the land between the two tributaries was part of Congress Poland, a de facto protectorate of the Russian Empire according to the Final Act of the 1815 Vienna Congress.

Two riverboats toured its vicinity, and in 1907, the German authorities had a 22 m (72 ft)-high Bismarck tower erected on the Przemsza shore according to the standard Götterdämmerung design by Wilhelm Kreis.

Between 1774 and 1877, a similar imperial tripoint existed by the city of Novoselytsia on the Prut River: the one between the Austrian (in Bukovina), Russian (in Bessarabia) and Ottoman (in the United Principalities) empires.