The Library of Congress is the largest library in the world, located in Washington, D.C. It was established in 1800 and serves as the research arm of the U.S. Congress. The library holds millions of books, recordings, photographs, maps, and manuscripts, making it a treasure trove of knowledge and history. It aims to preserve and provide access to the nation's cultural heritage. Visitors can explore various exhibits and collections, including works by famous authors like Mark Twain and Emily Dickinson. The library also offers educational programs and resources for students and researchers, making it an essential institution for learning and discovery.