A double-sided fireplace, also known as a "see-through" fireplace, is designed with glass on two opposite sides to allow viewing the flames from two adjacent rooms or areas. This type of fireplace is often installed in walls that separate two spaces, such as a living room and dining room, to create a sense of warmth and ambiance in both rooms. Double-sided fireplaces can be fueled by gas, wood, or electricity, and are often preferred for their aesthetic appeal and ability to bring people together in different spaces.