Here’s a nice idea, having a giant chess set in Bath city centre. Liverpool has done something similar by having a few pianos around so you often get impromptu performances by shoppers who can play. Of course there may be fewer chess players than pianists and it needs two to start a game. But I like the idea.
An alternative approach would be to have standard size tables, but I guess there might be a problem with people pinching the pieces. At least with a giant set they are difficult to hide in an inconspicuous way.
I did try searching Youtube for bath/city/chess but only came up with this, a video of the Szechenyi baths in Budapest where there are some floating chess sets. But it’s basically the same idea, getting chess out there rather than having it played in dingy church halls.