Hugo, the photographer says he took this amazing picture,
"from the stairs leading to the Sacré Coeur on a Sunday: it was packed with tourists, all shooting the monument, and they were looking at me really weird, taking this big piece of lawn ! lol"What could have caused this building in Paris to sink? A massive sink hole? A broken water main? Perhaps very large gophers?
Whatever happened to this building lets hope the monument is not in danger.