From what I've been able to determine what's pictured is a gas log lighter for wood burning fireplaces. The prior owner did some questionable stuff so I don't know if it was originally gas and he "converted" it to wood burning or if it was originally wood burning. As an example the log lighter is not installed correctly.
I originally wrote:
Gas, but I'm more convinced by the other arguments that it might be wood.
In profile, it is a rumford fireplace, but lacks some of the technology of those fireplaces to deal with smoke. It also does not have an air hole at the bottom, which a lot of wood-burning fireplaces use to avoid sending hot air up the chimney.
Besides that, it shows no sign of ever having had wood smoke in it, and the damper isn't the type you usually see on wood-burning fireplaces.
Most likely, the gas line you see was covered with various fake wood logs to create a more visually appealing setup.
Alternatively, there's a grate missing, and you can start the logs using the gas log igniter.
If anything, it might have originally been a coal burning fireplace, but most wood-burning fireplaces are deeper and not so clean.
It doesn't seem particularly efficient as a wood fireplace, but it might have gbeen designed solely for decorative use.