Reiningue, France
1046
Étain, France
12th century
Lucelle, France
1124
Saint-Hubert, France
1134
Proupiary, France
1136
Cintegabelle, France
1632
Valognes, France
1631
Tournay, France
11th century
Saint-Michel-en-l'Herm, France
682 AD
Bricquebec, France
1824
Saint-Sever-Calvados, France
10th century
La Meilleraye-de-Bretagne, France
1134-1183
Laon, France
11th century
Domfessel, France
1340
Auvers, France
13th century
Corte, France
9th century AD
Jard-sur-Mer, France
1197
Saint-Thierry, France
12th century
Soultz-les-Bains, France
12th century
Brévands, France
13th 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.