Don't understand the downvoting! The concave part of the GSK's right building can focus in a relatively small area quite a lot of sun. It is actually impossibl

Don't understand the downvoting! The concave part of the GSK's right building can focus in a relatively small area quite a lot of sun. It is actually impossible to sit in that area in a sunny day, starting May. I got cought while eating a sandwich so I know from my own experience.