The Martyrdom Chapel at Canterbury Cathedral, c.1408

This 3D visualisation shows the Martyrdom Chapel at Canterbury Cathedral - the site of St Thomas Becket's murder. Here there was a small altar with a reliquary containing the point of the sword which had cut into his head. The flagstones were said to bear the marks of his final footprints, and pilgrims came to kiss them.
The scene shows a mass on the morning of the Feast of the Martyrdom (29th December). On the eve of the feast a handful of hardy pilgrims were allowed to stay overnight in the Cathedral, swapping stories about Becket and eating and drinking around a fire. At dawn they went to the first of three Masses in the Martyrdom.