A centuries-old masterpiece by the Italian artist Leonardo Da Vinci, The Last Supper, has gone on public display in Milan again after being restored.

The restoration took twenty-two years to complete and prompted much public debate.

Those who worked on the project say the restoration has brought to light the brilliant colours of Da Vinci's original.

But critics say it has not remained faithful to the original Renaissance work which they say has essentially become a post-modern painting. The fresco was painted using experimental techniques and began to decay soon after it was completed in 1498.