a blot on the landscape in Italian
These factories are a blot on the landscape.
I would in particular like to raise the matter of the Baltic Sea, as the Baltic is an important EU sea, though at present it is a blot on the landscape.
If cars are not piled up as high in scrap yards as they used to be and are less of a blot on the landscape, that has something to do with the considerable extent to which parts of cars can be reused and recycled.
The problem is, you've become something of a blot on the landscape.