In this case “viewpoint “means overlooking a place from where a person can look at something.

The Places and the Eyes from the universe that watch over those objects. 

Considering a place where the art works are presented, I must choose a place which is related to these art works.  

Thinking of 100 years of diplomatic relations between Poland and Japan, I have chosen Auschwitz and Hiroshima which are remembered as the negative legacy of the last war.  

Because we humans shall never forget about these two cities.  

The ones who look at the art works will be stared back by them.