Headers between spaces can become beautiful archways with some simple framing and drywall installation. This addition to a header not only clearly defines the spaces separated by each archway, it creates the arched effect between the spaces it defines. Even in a large room, a header down this middle creates definition and a transition point for function and style differences.
Installing decorative columns on both sides of the header will make the opening smaller, but allow light to come through around the columns, adding interest to the appearance of the original opening. This installation is strictly decorative, so there is no need to spend a lot of money on load-bearing columns.
Accentuating the header with decorative moldings will bring out the header itself as a decorative element. Using different sizes of the same style molding will make the header actually appear smaller. If decorative moldings are installed on one side of the header, they should be installed on the other to create a flow between spaces.