
The church of San Gioacchino in Rome is full of frescoes, mosaics, and intricate stained glass windows, but perhaps its real masterpieces are charcoal wall drawings hidden away in its attic.
The drawings were done by one of 35 men - including Jews, anti-Fascist Christians, and military defectors - who were hidden in the attic during the Nazi occupation of Rome in World War Two, some for as long as six months.