If you want to give your credit card some exercise, head out to Forum Mittelrhein in Altstadt Koblenz. Why not take a stroll along the riverfront and watch the sunset while you're here? Splash some more cash at Löhr-Center.
After visiting Forum Confluentes, make a plan to see the other sights and activities in Koblenz. While you're in the area, stroll along the riverfront.