German President Frank-Walter Steinmeier (1st R, front) and Greek President Prokopis Pavlopoulos (3rd R, front) visit the international contemporary art exhibition Documenta 14 in Athens, Greece on April 8, 2017. Steinmeier and Pavlopoulos inaugurated on Saturday the international contemporary art exhibition Documenta 14 in Athens, praising the initiative to further boost the unity of Europeans through Art. (Xinhua/Marios Lolos)
