>>1027897Rules regarding whether you can camp freely or in specified and often overbooked/expensive/shitty campsites will vary country by country so check that out.
Personally never been to slovenia but triglav national park looks fucking beautiful, as for switzerland i can confirm its bloody amazing but wild camping isn't allowed though like in many places if you're discreet you can get away with it.
Culture you'll find almost anywhere desu, my personal favorites (besides switzerland) for /out/ are Norway and Sweden as wild camping is allowed and they're pretty scenic, romania, italy, spain, montengro are all really neat countries too
(Pic is interlaken in switzerland)