Even things like citizenship and elections are fully decentralized, which has some.. interesting outcomes sometimes, like the fact that one canton didn't allow women's suffrage until 1990 (!) [0] or that a lady who's lived there for 34 years had her citizenship application denied because the local dairy farmers found her animal rights activism "annoying". [1]

[0] https://en.wikipedia.org/wiki/Women%27s_suffrage_in_Switzerl... [1] https://www.bbc.com/news/newsbeat-38595807