Last week when I was in London I went, with my daughter, on a tour that she had booked for us to The Charterhouse, near St. Paul's. We had a wonderful guide who walked us round this ancient building which has been a Plague burial ground, a monastery, a Tudor mansion and a school, hospital and almshouse. It is still home to 40 Brothers - who are elderly people in need - and I found the sight of the table set for afternoon tea very moving.
If you want to do something quiet and different in the heart of London that you will remember for a long time, book yourself onto this tour.
I have written more about it on my history blog: History on the Buses.