Rinchnach, Germany
1011
Bredelar, Germany
1196
Kirchborchen, Germany
c. 1200
Wiek, Germany
c. 1400
Attel, Germany
c. 1037
Geisenfeld, Germany
1030
Oberalteich, Germany
c. 1100
Schlehdorf, Germany
740-769 AD
Thierhaupten, Germany
8th century AD
Ursberg, Germany
1126-1128
Warburg, Germany
1140
Freinsheim, Germany
1014
Lancken-Granitz, Germany
15th century
Heidenheim, Germany
c. 752
Euskirchen, Germany
14th century
Sagard, Germany
13th century
Aura an der Saale, Germany
1108-1122
Sonnefeld, Germany
1260
Blansingen, Germany
12th century
Kirchschletten, Germany
12th century
Ehrenbreitstein Fortress was built as the backbone of the regional fortification system, Festung Koblenz, by Prussia between 1817 and 1832 and guarded the middle Rhine region, an area that had been invaded by French troops repeatedly before. The fortress was never attacked.
Early fortifications at the site can be dated back to about 1000 BC. At about AD 1000 Ehrenbert erected a castle. The Archbishops of Trier expanded it with a supporting castle Burg Helferstein and guarded the Holy Tunic in it from 1657 to 1794. Successive Archbishops used the castle's strategic importance to barter between contending powers; thus in 1672 at the outset of war between France and Germany the Archbishop refused requests both from the envoys of Louis XIV and from Brandenburg's Ambassador, Christoph Caspar von Blumenthal, to permit the passage of troops across the Rhine.