It reminds me a lot of the "planet trail" next to Zurich, Switzerland, a trail with scale models of the sun and the planets [1]. The sun is about 1m in diameter. The earth is about 1cm in diameter, 100 or 200m away. Pluto is more than 3km down the path. Walking down that trail was the first time I realized how empty the solar system really is, and how far the giant planets really are. I highly recommend it to anyone having the opportunity, particularly with children. It gives you the same feeling of emptiness, with views of the Alps.