To hang them usually small screws are inserted at either end near the top and a wire or string is attached. You then hang the wire or string on a nail in the wall. Pictures without frames are a great look, less stodgy or traditional, but it also depends on the frame. I have some of each.

They look like repruduuctions on stretched canvas (canvas stretched over a frame). When a canvas is done with the intent to display it that way, the image or at least paint in a solid color wraps around the edge.

Interesting they look pretty flat to me so I thought they were on board. I have a few paintings in frames I don't like> I was thinking of taking them out but can't quite figure out how to get them apart. :)

Ingrid - do you have any pictures?

Definitely on board, I've seen many like that in England.

I love both framed and unframed look.

I have a couple oil paintings on board, these are of mixed technique..I think it's called encaustic. It's a bit dimensional. These are simply framed, like canvas painting..obviously no mat though.

That inspiration room is beautiful. I think the two larger pieces look better unframed than the two smaller ones.

Oh I really like that first picture.

The art looks pretty flat to me. I'm not sure the proper way to hang them but I'd probably add some type of hardware, hanger, or velcro to make it work.