mount gros and alpes hills with villas beneath astronomical observatory over paillon valley in nice on french riviera in france

nice france french riviera coast azure provence alpes cote 039 azur mediterranean sea mount gros hill astronomical observatory astronomy paillon valley observatoire villa house residence property estate history historic park malgarach roquebilliere monastery temple cimiez landscape cityscape seaside old town tourist attraction panorama panoramic vacation destination landmark travel touristic nisse hills villas beneath river august 2022: