The Electorate of Trier was an ecclesiastical principality of the Holy Roman Empire that existed from the end of the 9th to the early 19th century. It was the temporal possession of the prince-archbishop of Trier who was, ex officio, a prince-elector of the empire. The other ecclesiastical electors were the electors of Cologne and Mainz.
The Electorate of Trier in 1720
The Roman Bridge across the Moselle River
The Constantine Basilica in Trier (Aula Palatina)
Archdioceses of Central Europe, 1500
Koblenz is a German city on the banks of the Rhine and the Moselle, a multinational tributary.
View of the Deutsches Eck and Koblenz Old Town
Koblenz in the 16th century
Josef Friedrich Matthes in 1923 in Koblenz during the short lived Rhenish Republic
Ehrenbreitstein Fortress in the background