Do you mean the script/alphabet, or the language? At some point I noticed someone had "helpfully" translated some concert venue names in Copenhagen into Englis

Do you mean the script/alphabet, or the language? At some point I noticed someone had "helpfully" translated some concert venue names in Copenhagen into English, so Krudtønden became "The Powder Keg", etc. That's not useful, as locals might well not understand what it means if you ask directions or search for a website. It's on Østerfælled Torv, would you have that read as Eastern Commons Market? Places with other alphabets seem to vary. Greece shows me only Latin transliterations, but Syria shows me both Latin and Arabic in many cases, which is useful — I can read one, and match the shape of the letters for the other.