What is the largest field of view achievable by a magnifying lens system when the observer is not peering through a peephole?

I was wondering if it would be possible to have a lens display a 60” 30X image of a field. This display would be something you could stand in front of.

I am not talking about a digital camera picking up an image from a peep hole and broadcasting it to a video screen. Rather, maybe a handheld or stationary device that you could aim and have a wide field of view right before your eyes, completely based on physical optics, glass and mirrors etc.