I came across this gate on a random bike ride today. It doesn't have traditional hinges, but pivots on the left-hand post. The right-hand end of the gate rests on a cradle. To open, you lift it off the cradle and walk the end in a 1/4-circle.
This is the first one I have seen with a dressed stone as a counterweight, and I particularly liked the holder that has been built for it, specially shaped. The holes in the stone testify to a previous life, and the gate looks well-crafted. I find a robust beauty in this sort of craftsmanship.