Picture any room in your house and we can guarantee the walls didn’t figure heavily in your imagination. The truth is, we spend so much time worrying about what’s between them, fussing over fabrics and furniture and accessories, that we forget how impactful they can be. Paint walls a vibrant hue and a room instantly comes to life; cover them with richly patterned wallpaper and the result is nothing short of dazzling. Of course, such bold strokes aren’t for everyone. If white walls are your reality—because you’re in a rental apartment or you simply prefer a more subdued color scheme—consider the effect of picture-frame molding or a perfectly hung gallery wall. The possibilities are endless.