As I wander around I often seen gateposts with statues on them. They’re usually either lions or eagles. I can’t ever recall seeing horse heads. As is usually they case (but not always as we have a case where three eagles are used near us) there were two of them, one on each of two gateposts.
From the road there was no indication of what this property might be. I took a look at Google maps satellite view and I saw an large building with quite a few cars parked outside and an area which appeared to be for horse jumping. So I figure it was probably some kind of stable/riding academy, which would of course explain the unusual statues.
Taken with a Sony RX-100 M.