I have for years been telling people that a large hedge can be not only a thing of beauty and a screen, but also create a frame for a view and a change in perspective. I often cite the notches in my own mixed native hedges since these are not often thought of as decorative in the way that a more formal yew hedge might be.
Below is the view from my kitchen sink- anyone would think I planned it! A large hedge forms the boundary and protects the house from the north wind across the field, but the notch allows us to see the views beyond, and frames the marvellous oak in the next field.
Yes I know the hedge needs a trim, but I have been dealing with moles and the hedge is lower on my priority list! The rape field is a stunning vision through the notch nonetheless.