Hmm, talking of Bristol, I'm going there for the first time shortly - any recommendations for good places to take a 3 year old and 5 month old? We've got the zoo on our (short) list already...
I wasn't clear enough. In both the cases I know of the path exists, but the line has been 'smoothed' to an easy curve and so doesn't avoid the feature whereas, on the ground, there is a deviation to miss it.