How heavy? I have a few fairly large paintings and use two picture hooks.

Ooks hooks can be found in any hardware store and work great.

I’ve had good luck with Gorilla Hooks. And they only make a small hole in the wall. I’d probably put a wire on back of your art and use 2 heavy duty Gorilla Hooks.

Yes, Gorilla Hooks. Very small hole & very stable for large art if use 2 hooks spaced apart.