Black Sheep - It's a church.
Oh, I don't see them as 'churches' (the physical building I mean). I see them as private property. My local Parish Church (CofE) is open to everyone - sometimes I wander in just because I can (lol) to look at the architecture and windows, during the daytime, when no services are being held. I am never challenged or questioned and I never feel 'uncomfortable'. I have had one occasion when I've needed to use the Church - a different Church in a neighbouring area - car park (labelled private property), and I entered the Church building and asked the permission of the vicar (I must say, I was apprehensive, as for some reason I had it in my mind that JWs would turn people away from their car park), and he (the vicar) couldn't have been nicer. In fact, I stayed a while and chatted about the Bible/144,000/charity etc.