Yes, it is possible to do this. In fact, there are many reasons why people would want to have their fireplace surround by corners as opposed to an open space. The main reason is that if the room has one side significantly longer than another side – for example, if it is a long, narrow room – then the fireplace can be placed against the shorter side to create a more balanced look. Another reason people might want to put their fireplace in a corner is if they have limited space in their home. By placing the fireplace against one of the walls, it will take up less space than if it was placed in the middle of the room. In addition, if you have a large piece of furniture – such as a sofa – that is also taking up space near where your fireplace would normally go, then putting it against one wall will free up some valuable floor space for other pieces of furniture or even an area rug to be placed.