When you go to Rome one of the most important places to visit is the ‘Scavi’ that is, the excavations under St Peter’s Basilica. The problem is, it is increasingly difficult to get tickets. Happily, a virtual tour of the Scavi is now available online. It’s not the same as a real visit in which everything is explained, but it’s a good second best, and if you’ve been there it is a great reminder of the visit. Go here.