Regensburg was originally a Roman settlement, and in places the original fortifications are still visible. Here they have been incorporated into a building on the edge of the cathedral complex.
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In many places, the Roman walls have long been buried under later constructions. In the next picture, the ancient walls were only discovered when a car park was being constructed, but as much as possible has been preserved under the car park building.
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It seems a bit bizarre for the ancient city wall to disappear under a car park; but actually it is rather well done as a historical monument.
The next picture shows another part of the Roman fortification. This is part of an archeological excavation.
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Now, why is there a McDonald's sign next to it? That seems particularly incongruous, creating the greatest negative advertising one can imagine for McDonald's.
In many ways, this seems even worse than the graffiti I mentioned in my previous posting. Sometimes commercial graffiti is even more ghastly than the spray-painting efforts of individuals.
What can we do about it? One thing we can do is to refuse EVER to go to McDonald's. But I guess they won't care too much. McDonald's never did earn any money from people who can think, as anybody who can think knows that the food there is absolute rubbish.