You know a good thing when you see it!
My Grandparents had a house just outside Llanfachreth nr Dolgellau, North Wales, which sat on its own in between a few mountains. One can only assume it was a rather convenient (unofficial) marker. Offered some great flybys whilst sitting out in the garden but the best had to be back in the late 80's/early 90's when I ran to the window amidst rattling ornaments on the shelves in time to see a Buccaneer overhead hurtling off into the distance at what must have been 200-300ft... Quality!