Millions of people from all over the world are expected to go to Turin to see the Shroud, a linen cloth that bears a faint negative image of the front and back of a long-haired bearded man who appears to have wounds in his feet, wrists and side that correspond with the wounds of Christ's crucifixion.
The authenticity of the Shroud's intriguing image has been a matter of debate for centuries, with scientists unable to explain how the image was made. The most recent scientific tests on the cloth indicate it is likely to be a medieval fake.
The Catholic Church does not have an official position on the authenticity of the Shroud, but has authorized its veneration as a relic or icon of Christ's passion. A number of Popes, including John Paul II have expressed their personal belief in its authenticity. Pope Benedict XVI is expected to express his belief about the Shroud when he visits in May.