Memento mori

Chinese dissident artist Ai Weiwei warns against hubris in what he calls "such a troublesome time" with his first glass sculpture, made on the Venetian island of Murano, with the foreboding subtitle: "Memento Mori," Latin for "Remember You Must Die."

Acclaimed South African artist William Kentridge presents a 40-meter caravan of shadows extending over eight screens, reminiscent of a medieval danse macabre, every night at 9.30 p.m. through June 30 on the Dionysiou Areopagitou promenade, just a few meters from the Acropolis metro station.