How deep is it from front to back? It looks huge.

are you going to keep the plants up there?

Do you need that window exposed? for ventilation? can you take a wider angle photo to see what else is in the room?

I like it as it is. I think I would keep the bigger plant by the window and put a tallish plant on the floor on the other side by the window. Then I would put two other things on top of the fireplace besides the plant.....maybe a colorful vase, a box, or a statue or a bowl. Or even small piece of artwork on a small easel. Something colorful. On the floor on the right side of the fireplace a stool, a box or a small ottoman...depends what the rest of your room looks like.

I think a new tile would make a huge difference. I don’t know what your decor style is ... options are really limitless.

A neutral tile:

Colorful:

Just two examples of millions.

I wouldn't tear it out either :) So, if you have additional tile, I would tile the entire "box" or paint it all in the same color (the color of the tile). Right now it seems larger because it is two tone... if you paint it all the same color the sides will recede, reducing the perceived depth.

Then, one really nice (possibly even silk) plant that really fits the space. Not too tall, not too low, and fairly large.

Hope this helps!

Don’t put plants on it. It’s illogical and disturbing. Don’t put anything flammable-looking on it either.

Me? I would want to take advantage of the odd window there. I think I’d ask a glass artist to create a really nice modern mobile for me. And I would light it with recessed lighting. And then I would do something surprising on the other angle of wall that faces the window. I’m not sure what. Maybe a stone mandela...

I would suggest new tile with clean lines and perhaps adding MDF board and batten/molding to give the mantle and the wall behind the more connected feel. Perhaps a design like this.

Just to give you an idea

Green Forest Canopy Modern Mobile, Horizontal Style, Indoor · More Info

Medium Rhythm Mobile, Blue · More Info

Futura Mobile · More Info

I like that fireplace you posted, Voulu Creative, but don’t see how in the world it could be done well in the OP’s corner situation .... with the windows there, the bump out in the back corner, sticking out so far, etc. There’s a lot going on already with various shapes, not sure adding more everywhere would be a good look. No offense intended with my opinion, just discussing. :)

Would be nice to know what the rest of your decor tastes are to make suggestions. I think you should do something rather minimalist, but in what direction, up to you. I’m not a Buddhist, but I would find it almost irresistible to put a really lovely Buddha up there, or a really Pop one. But if you would be horrified...

If your house has a coastal them, a couple of glass cylinders filled with beach stones could work — or build our own cairn!

A very large Chinese gong might be great.

Problem is how expensive massive decorative objects can be. That’s why my first thought was a minimalist mobile, like a plume of smoke...

One more idea would be to create a false chimney with plywood and tile it. And then tile the white box in the same tile. Try to get a look like this, but however modern you like

Интерьер загородного дома, Троицк · More Info

I would leave the window on the right exposed. Just build the box coming forward from the straight panel in the back, from the ceiling down to the top of your firebox. You could bevel it or make it half octagonal.

You could just paint it white if you didn’t want to tile it. But I would tile it with decorative tile, whatever goes beset with your decor.

Ital, don’t forget that bump out in the back corner. Might look strange with two pseudo chimneys.

That is a super cool fireplace ... where is it? Looks Scandinavian.

You have two windows on each side, so your instinct to put plants up there is great. Just add a couple larger ones in the back, and fill the space with greenery, including some trailing plants off the front and sides. Keep the shades up for more light. Consider drapes on the left window, ceiling to floor, to balance out the mass of the fireplace. (What kind of designer puts in that sort of thing? Ugh.) I can understand your frustration, but try more plants, curtains, great looking birch logs in a basket on the "hearth." All these things will reduce the structural impact with very little cost.

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P.S. I see there's not much space to pull back curtains, though light, airy white ones might work. Other posibility is to get modern shutters for the big window. Pulled open, the shutters would partially hide the fireplace.

@Jilly I am suggesting building a 5-sided hollow box with no back on it that would slide up against the bump out to hide it, like a cover. It would look like a kind of tabernacle and be deep enough so that the front of that box would come almost all the way to the front of the unit. I would tile all of it and tile the unit, although giving it the exact same white surface of the unit would also be fine.

The stove in the photo is in a living room in Moscow, but in might have come from another country.

Add a mantel top and tile or marble the entire corner, then cover the black box with a decorative fireplace screen and matching fireplace tools. Of course, the style of these options depends on the rest of the decor in the room. Posting some pictures of the space would help us make the most appropriate recommendations.

Shown above: 1P33M-99 Custom Single Panel Fireplace Screen