Recently I invented a new game. It’s called Xanadu, after Kubla Khan’s legendary summer palace and of course, the film Citizen Kane. The rules are simple. You walk, cycle or drive in your local area, bagging as many black-on-yellow signs – the ones pointing to new housing developments – as possible. There are two prizes – the one who gets the most signs and can remember their names and one for the most ridiculous – not as easy as…

Eight minutes, Google Earth tells me it would take from my house. To my shame it takes me two days to reach Linn Park to locate another of Harry Bell’s PSAs, the site of the old Cathcart Castle. On day one I get lost – ironic since this project relies heavily on map reading and one’s ability to find places. Happily there’s an upside to this since I stumbled on the Court Knowe, situated on the opposite side of…