I’m not going to list it three times, but we have been to this church three times now, on every morning of our trip here. Alasdair did some advance research and found the Basilica di San Petronio on Atlas Obscura. Being built north to south, it is able to support a meridian line with a camera obscura in the roof allowing for a tight spotlight on today’s date at noon each day. The first day, we get there just in time, spend a while staring where we think it will be, then realise at 12.03pm that we were looking in the wrong direction. The next day, we return, but it is overcast. The final day, we just about manage it, despite a crowd of people (which, to be fair, should have been our clue on day one). It could have been sunnier, but we saw a spot of light on the floor in November, job’s a good ‘un.