Unless you have looked at a picture to prepare yourself, at first sight the tomb of the Blessed Carlo Acutis, which stands in the Church of Santa Maria Maggiore in the Umbrian hill town of Assisi, would strike you as distinctly unusual, perhaps a little unsettling.

There, in a glass-sided tomb, lies the body of a teenage boy wearing jeans, a track top and a pair of Nike trainers, a rosary clutched in his hands. The way the body is presented, it seems as if he is floating.

The Telegraph London