What are some famous monuments and statues that have been harmed by acid rain?

Question

can you name a few?

Answer 1

The old professor says: Just about all of them are being etched away by acid rain to some degree. One series of monuments that has been measured and followed over the years are the Cleopatra's Needles around the world. New York City's has been compared with the same ones in Paris, London and, of course, in Egypt. Knowing that they are all composed of the same rock material, the amount of rainfall in each of these areas and the acidity, we can actually measure the amount of weathering and erosion for these places. Egypt, of course, has the most intact Needle since it is a desert environment.

Needless to say, NY has suffered to the point that the inscriptions are barely discernable while the Egyptian one looks "store fresh". I have had students in my envrionmental geology course measure the effects on tombstones in middle Georgia and compared the amount of degradation based on the composition of the stone and the inscribed dates on them.

Answer 2

Cleopatra's Needle, taken from Egypt to London. Its worn down, by rain, maybe not acid rain though.

Answer 3

There's that one in Ruhr (sp.?) Germany that was photographed in 1908 and then in 1968. I think it is of the Holy Mother but I am not sure.