Mainz is an often overlooked destination due to the destruction the city faced in WWII, but that should not be a reason to skip Mainz, as there is enough left to make it worth your time.

Mainz is an often overlooked destination due to the destruction the city faced in WWII, but that should not be a reason to skip Mainz, as there is enough left to make it worth your time.
The city of Mannheim was once the illustrious capital of the Upper-Rhine, though virtually nothing survives. Nevertheless, since you might find yourself here by accident let me give you a quick tour of what's left.
Koblenz is often considered one of the highlights of the UNESCO Middle-Rhine Valley. The mighty Fortress of Ehrenbreitstein rises above the small but charming old town in the most romantic part of Germany.
Heidelberg's offers a small but highly concentrated dose of old-town architecture and old-world charm in Southern Germany. Its worth a visit, even with its reputation for tourists.
You will either spend two hours or two days here, depending on how interested you are in the history of the city and its cultural life. Let's take a look at what there is to do in the Imperial City of Aachen.