As a part of Florens2012 there is an absolutely amazing grouping of three of Florence's most famous depictions of Christ on The Cross inside the Baptistry, presented as "Mysterium Crucis" of the "Mystery of The Cross". The works are by Brunelleschi, Donatello and Michelangelo, and will be on display until November 11th. This has to be one of the most powerful displays of religious iconography and art that I have ever seen - I highly recommend a visit.