Bürgergehorsam, Fortified tower in Osnabrück, Germany

The Bürgergehorsam is a fortified tower in Osnabrück, built between 1517 and 1519 as the youngest of the city's large defensive towers. Its walls are up to 3.50 metres thick, and its wide loopholes and powder vents indicate the use of cannon. A surviving wall stub shows where the former city wall joined the tower.

The tower was built between 1517 and 1519 and underwent major modifications in 1542 when its original curved roof was replaced with a steeper lead-covered structure. These changes reflected evolving demands on the city's defensive capabilities.

The name Bürgergehorsam refers to the tower's temporary function as a civic obedience site, not to medieval governance. In 1954 it was designated a memorial to expellees with the inscription 'Ewig deutscher Osten', inaugurated on 12 September 1954 by Linus Kather; the lettering was removed in November 1992. From 1981 into the 1990s the tower housed the Ostdeutsche Lehrschau with costumes from Upper Silesia, lace from the Erzgebirge and amber from Danzig.

The tower is accessed through a main entrance on the first floor and features an iron spiral staircase installed in 1977 inside. Visitors should expect narrow stairs and can explore the different levels to see how the interior spaces are arranged.

In 1954 the tower was made a memorial to displaced Germans, with the inscription "Ewig deutscher Osten" unveiled on 12 September 1954 by Linus Kather; the lettering was removed in November 1992. From 1981 into the 1990s it housed the Ostdeutsche Lehrschau, showing costumes from Upper Silesia, lace from the Erzgebirge and amber from Danzig; the collection's present whereabouts are unknown.