The Library of Congress is a research library for members of Congress, one of the most important national libraries in the United States, and the oldest federal institution in the country. In this library there are historical books and many political books. This library is visited by locals and tourists from all over the world, and although visitors cannot take books with them abroad, they can read and view distinguished books within the walls of the library. This library is also distinguished by its antique decorations dating back to the nineteenth century, where you will find ornate ceilings, carvings, beautiful stained glass, and much more.