Bookshelves are furniture pieces designed to hold and display books. They come in various sizes, styles, and materials, such as wood, metal, or plastic. Bookshelves can be found in homes, libraries, and offices, providing a convenient way to organize and access reading materials. In addition to books, bookshelves can also store decorative items, photos, and other personal belongings. They can be freestanding or built into walls, and some have adjustable shelves to accommodate different book sizes. Overall, bookshelves serve both functional and aesthetic purposes in any space.