Maryhill Park is the only park in Glasgow (or even the world, possibly) where you can get some exercise and get a feeling for the size of the universe at the same time!
There are metal plates bolted to the main path, starting at the Caldercuilt Road / Summerston entrance. From there, head up the hill and follow the main path around to the right, then along the avenue and over the hill. The inner planets are quite small and close together, the outer gas giants are much more widely spread out.
The sizes and distances are all to scale, each little hole in the plate is the size of the planet to a scale of 1:5,567,000,000. On this scale, the nearest star to our solar system – Alpha Centauri – would be in Mongolia!