The Library of Congress is the largest library in the world by collection size, with over 170 million items.
The British Library holds over 200 million items, making it one of the largest libraries in the world.
The National Library of China has a collection of over 37 million items, including books, periodicals, and historical documents.
The Russian State Library, formerly known as the Lenin State Library of the USSR, has a collection of over 47 million items.
The National Library of France holds over 40 million items, including books, manuscripts, prints, and photographs.