The Steel Furnace is a medium-sized, industrial structure with a robust, rectangular base and a tall, cylindrical chimney. Its body is constructed from dark, matte steel plates with visible rivets and seams, giving it a sturdy, utilitarian appearance. The furnace features a large, hinged door for loading materials, with a glowing orange interior visible through small vents, indicating intense heat. The chimney emits a steady stream of smoke, adding to the industrial aesthetic. The overall design is functional yet detailed, with subtle weathering and scorch marks around the heat sources.