Just off (with work) for a couple of days to Rome. Looking at the current weather, it's 32 degrees C over there. Forgetting to pack sunglasses could prove a costly mistake both in terms of glare and fashion (since the wearing of them appears mandatory in Italy).
If I get any spare time, will try and take in a few key places and post photos.
Could always follow the 'Da Vinci Code' clues in the Vatican. If I don't return, you know why….