Well, at least half round.
When we were in Canada last autumn, we found some stone benches for a great price near my MIL’s. We purchased three of them, and finally got two back to Kilbourne Grove, with another one to return with us hopefully this fall. The first year we were at Kilbourne Grove we had purchased one of those sets that you see a lot of, a concrete table with three rounded benches to go around them. My best friend had a set like this, and we learned after a dinner at her house, they are soooo uncomfortable. So we bring wicker chairs over to the table when we have dinner, and have placed the benches around the garden.

Can you see the benches?
Two were in the Kitchen garden with one under a tree near the Croquet lawn. When I had designed my front path (which will hopefully happen as soon as we get transferred back to Canada), I placed a focal point opposite the bay window in the library. Four ‘Emerald’ cedars echo the shape of the bay window, jutting out from the path. My teacher had suggested using it as a statue niche, but I had those benches at the back of my mind. And now that we had the new, (smaller) ones to take their place in the Kitchen Garden, they could be moved.
So we did,
lots of grunting and groaning going on
and they will have to be moved again when we do the path and the grass comes up, but I am super happy with the way they look now.

This photo was taken from inside the library.
It seems a bit empty behind them, but the spirea hedge will be extended along behind the cedars, hopefully this fall. I am super cheap, and wait until I find them on sale, and buy as many as will fit in whatever vehicle I have rented at the time. So far, 15 have been planted, and I am almost half way, yay!