you will stumble across a lot of shops etc. that are being renovated because of the flood. Because the flood was such a big desaster all shops in Euskirchen were left as they were in the map so that you have them as orientation landmarks etc. and it would have been waay too much work to "close" all of them. So I think only the shops that are definitely closed and will not come back are interesting. Those that are being renovated and will come back at the same place, the same shop, can be "ignored".