Great question! Both are correct, but we tend to use them in different situations. The apostrophe-s ('s) is more natural for teams, people, and organisations, so "Bayern Munich's stadium" sounds much more natural in everyday English. "The stadium of Bayern Munich" isn't wrong but sounds overly formal, almost like a translation. For places like cities it's the opposite — "the Cathedral of Barcelona" sounds more natural and grand, while "Barcelona's cathedral" works too but feels more casual. A simple rule of thumb: people and organisations → apostrophe-s. Landmarks and monuments → "of." Hope that helps! ⚽