Do you honestly expect any sort of response to this partial form of question/statement? Not even a please or thank you. Come on, be more effusive ....Nei.
Go to Cunardís web site and calendar if cruises. http://www.cunard.co.uk/CruiseCalendar.asp?LeftNav=Planner&plan_active=CruiseCalendar
Select your cruise and on clicking you will open a page detailing the cruise. On the top you will see shore excursions
We found it easy to visit without using the tour facility from the ship. The Basilica of St Peter and the Cistine Chapel are well worth seeing. It's a bit of a walk arount the back of the Basilica to get to the Cistine Chapel though.