There’s an entire solar system hiding inside Sweden

And also one in Coonabarabran, New South Wales, Australia with the Siding Spring Observatory [1] as the sun. Claimed to be the Worlds Largest Virtual Solar System Drive [2]. A list of locations is available [3] and a map [4].

[1] https://rsaa.anu.edu.au/observatories/siding-spring-observat...

[2] https://www.visitnsw.com/destinations/country-nsw/warrumbung...

[3] https://web.archive.org/web/20210104033657/https://www.solar...

[4] https://web.archive.org/web/20200718123553/http://www.solars...