This is one of what used to be Munich's famed city wall from the medieval ages till late into the 18th century. It served as a major defensive fortification and checkpoint. It is located near Karlsplatz at the western end of Neuhauser Straße, a portion of Munich's down-town pedestrian zone. What remains today are two towers and the connecting arch with only little resemblance of the vast medieval walls and gate that formed the city main defense.