Before dismissing the image as yet another pretty picture of a medieval church, take a closer look. Yes,those are skulls. Instead of the usual alter pictures, there is a wall of skulls, displayed prominently for the church congregation. Meet the martyrs of Otranto Catherdral in Italy's Apulia region.
The year was 1480and the fateful day July 28 when a fleet of 70 to 200 Ottoman ships reached the city of Otranto, then part of the Kingdom of Naples. It was the beginning of the Ottoman wars (1454 - 1683) in Europe and invader Mohammed II had conquered Constantinople just 28 years earlier. The garrison and the citizens took cover in the Castle of Otranto but as it had no cannons for defense, it was soon conquered and the garrison killed.
On August 12th, 800 citizens were taken to the hill of Minerva, now called the Hill of the Martyrs, and beheaded because they refused to renounce their Catholic faith. Their remains were taken to the cathedral and the skulls preserved in the alter piece as a prominent reminder of these 800 martyrs.