I am fascinated by those little artifacts of history that don't quite fit into our paradigms, little events and items that stretch our way of thinking and make us question our assumptions.
The "shroud of Turin" is one of those artifacts. The shroud has an amazing history, and there are numerous studies done about it. Whether one believes this was the burial cloth of Christ or not, the artifact of the shroud is worth pondering. Here's one of those factoids that make us think about the shroud and its relation to the gospel accounts. You can read here an article about Mozarabic rite, a liturgy used in 6th century Spain, which hints at what might be evidence for the shroud.