Archbishop Theoderich von Wied called the Knights of the Teutonic Order to Koblenz in 1216 and gave them part of the grounds of St. Kastor's Abbey together with the St. Nicholas Hospital located there. On the site, directly at the confluence of the Rhine and Moselle, a Teutonic Order settlement was built soon afterwards. With the construction of the Kaiser Wilhelm I Monument in 1897, the name "Deutsches Eck" shifted from the site of the Teutonic Order branch to the area of the monument, which is now commonly referred to as "Deutsches Eck". From 1820, the Prussians overbuilt the existing medieval walls with a casemate structure bearing the cross of the Teutonic Order. This structure was designed as a bastion to combat a possible attack from the river. Next to it, the last Prussian city gate has been completely preserved to this day; it now forms the connection between Danziger Freiheit and the Blumenhof.