The work, which depicts a complete cycle of more than 100 Bible scenes, covers the entire walls and ceiling of the 700-year-old Scrovegni chapel in Padua.

The restoration focused on rescuing the frescoes' original colours

The different paint on the donkey's snout (right) was discovered only after some restoration of the painting

Giotto's impressionistic technique seems to show the angels in flight

The mothers of the children massacred by King Herod - traces of real tears run down their faces

Giotto delights in depicting the damned: Devils torment the bodies of the dead condemned to hell

Giotto's revolutionary style influenced later painters - those infants' bodies look forward to Mantegna and Picasso