Seems there are a whole bunch of them across the planet: https://en.wikipedia.org/wiki/Solar_System_model https://en.wikipedia.org/wiki/Solar_System_model Larg

Seems there are a whole bunch of them across the planet: https://en.wikipedia.org/wiki/Solar_System_model https://en.wikipedia.org/wiki/Solar_System_model Largest one being in Sweden, with a scale of 1:20,000,000 (spanning the whole country): https://en.wikipedia.org/wiki/Solar_System_model https://en.wikipedia.org/wiki/Solar_System_model In comparison, both the Zurich and Netherlands one are 1:1,000,000,000