Italian to English Art/Literary Music music museum

Text for a museum based on operac items (sheet music, costumes, scenery, etc.).

I was given a short text already in English to check and revise if necessary and the title had been translated as "Opera turns museum".
After reading my corrections (including changing the title to "Opera becomes a museum", the client asked if her version was wrong and I said that using the verb to turn, a possible alternative would have been "Opera turns (or turned) into a museum"...
I would never have used to turn on its own, such as, for example: milk turns sour, or he turned red with rage, the soldier turned traitor.
Do you agree?