St Peter Martyr was killed on April 6, 1252, but since that day so often occurs in Holy Week or Easter week, when he was canonized less than a year after his death, his feast was assigned to April 29. As we have noted several times in the past (see here and here), his relics are in the Portinari chapel within the basilica of St Eustorgius in Milan. Here are some pictures and a video of the large reliquary containing his skull, taken in the basilica earlier today by Nicola de’ Grandi.
In the background of this picture, we see the Saint’s monumental tomb of the type known as an ‘arca’ in Italian, which is deliberately designed so that the faithful can walk under it and touch the sarcophagus containing the relics.