One thing that bothers me is that charts/apps like this have to use logarithmic scale due to obvious reasons, but log scale is just not very effective for most people to comprehend on an intuitive level.
In the last section each pixel is 1,000,000km, and the first section each pixel represents 1 meter, but experience wise it doesn't make the last section feel that much bigger, and I still have to keep looking at the numbers on the bottom to actually perceive the correct scale.
That could make for a cool park. I imagine you'd have clear line of sight between the planets (either by having a clear path between or by raising them up on monuments), and telescopes setup at each planet in such a way that visitors could look at the other planets without people getting in the way.
The Sun would be 1.5 meters across, the Earth would be 1.2 centimeters across, and the whole thing would be 4.5 km from the Sun to Pluto.
One solution to help the user experience the scale would be if the spacecraft got continuously smaller pixelwise as the logarithmic scale gradually increased.
In the last section each pixel is 1,000,000km, and the first section each pixel represents 1 meter, but experience wise it doesn't make the last section feel that much bigger, and I still have to keep looking at the numbers on the bottom to actually perceive the correct scale.