The West Rhine railway is a famously picturesque, double-track electrified railway line running for 185 km from Cologne via Bonn, Koblenz, and Bingen to Mainz. It is situated close to the western (left) bank of the river Rhine and mostly aligned to allow 160 km/h operation between Cologne and Koblenz and between Bingen and Mainz. Line speed between Koblenz and Bingen is restricted by the meandering nature of the Rhine Gorge, a UNESCO World Heritage Site.

Koblenz is a German city on the banks of the Rhine and the Moselle, a multinational tributary.