tiia wrote:Europe: Austria, Belgium, Croatia, Czech Republic, Denmark, Estonia, Finland, France, Germany ( ), Greece, Hungary, Italy (Southern Tirol...), Netherlands, Poland, Slovakia, Spain, Sweden, UK
Outside Europe: Australia, Canada, India, Japan, US
I only counted those countries where I've stayed overnight. But all of them fulfill the 24h-rule easily: I've always stayed at least once for two nights or more.
added in 2016/2017: Poland, Hungary
added in 2022: Denmark and finally more parts of Spain
This reminded me of the fact, that I could finally update my list here too.