Later this week, I have a rare day off work on a day when DS (2) is booked in to nursery. A good friend is leaving the UK soon to work abroad and we are going to spend the day together - I haven't seen her enough since I moved out of London and had DS. We have visited most of the main touristy sites over the years, but are up for anything that's currently on and interesting - from exhibitions to shows to spa days! The only criteria is that it has to be in the daytime rather than evening.
Where would you go, and what would you do?