"How old is the church?"
Translation:Hoe oud is de kerk?
There is an inversion here, just not the same one as with a yes-no question (where the verb moves to the front). In sentences with a question word (who, where, how etc.), the part with the question word is moved to the front (in this case "❤❤❤ oud"). If that part wasn't already the subject, there is an inversion to keep the verb in second place (in this case, subject "de kerk" and verb "is" are inverted).