Photo taken on Aug. 4, 2017 shows works by Argentinean artist Adrian Villar Rojas inside vitrines set up on the Hill of the Nymphs in the centre of Athens, Greece. Celebrated Argentinean artist Adrian Villar Rojas has transformed this summer the outdoor space of the Athens National Observatory opposite to the Athens Acropolis into a "jungle", posing to locals and foreign tourists questions regarding disappearance, extinction, the passage and volatility of time. (Xinhua/Lefteris Partsalis)
