Valances, typically made of fabric, drape gracefully over the top of curtains or blinds, softening the space and providing a decorative layer. Cornices, on the other hand, are structured, upholstered boards that add a clean, architectural finish to your window treatments. Both options help conceal curtain rods and hardware, offering a polished, refined look that complements any decor style—from classic and traditional to modern and minimalist.