A smaller model (1 billion to one scale), the "Planetenweg," is on the bicycle path between Georgensgmünd and Spalt, about 30 minutes south of Nuremberg: https:

A smaller model (1 billion to one scale), the "Planetenweg," is on the bicycle path between Georgensgmünd and Spalt, about 30 minutes south of Nuremberg: https://www.georgensgmuend.de/de/freizeit-kultur-tourismus/sehenswuerdigkeiten/lehrpfad-planetenweg https://www.georgensgmuend.de/de/freizeit-kultur-tourismus/s... Since it's only 7.5km (about 5 miles) from the Sun to Pluto, it's a feasible daytrip with kids.