I've lived in this corner of Cambridgeshire for over two decades and have often wondered what is hidden behind the impressive front gate of Longstowe Hall (which strangely I didn't take a photograph of), but have never actively done anything to find out, despite it being only a ten minute or so drive up the road from me.
During lockdown I did inadvertently (honest!) wander onto their parkland while following a badly signposted public footpath, but I still didn't get to see the hall and formal gardens. (Some of the photos in my "Laying Down Lines" post are from that inadvertent stroll).