 Complete the following phrase:  During the times of the Teutonic Order, in the fourteenth century, a wooden fortress stood by the mouth of the river Vistula, flowing into the Baltic Sea; which was burnt down by a Hussite Sirotci raid, in September, 1433. In 1482, a brick lighthouse tower was built in place of the former fortress. The tower was assigned to control the passage of ships, traveling to and from the Bay of Gdańsks main port city of Gdańsk. The Wisłoujście Fortress was target for military campaigns. In 1577 the fortress was besieged several times by Stefan Batory, inconclusively, during the 