Koblenz is located on both banks of the Rhine at its confluence with the Mosel River.
Located there is a famous huge monument of Emperor William I on horseback. He was the King of Prussia and the first German Emperor.
Of interest to my Seattle friends/family, he was the arbitrator between the US and Britain that gave us the U.S. San Juan Islands.
We took an aerial tram up to Ehrenbreitstein Fortress, a UNESCO World Heritage Site.
Great trivia fact – We all know that Mosel wine bottles are green and Rhine brown. Today I learned the colors are taken from their respective rivers. The Mosel is quite dark with a greenish hue and the Rhine is dirty brown looking.