The Columbia University Library is the main library system of Columbia University, located in New York City. It consists of over 20 libraries, with the largest being the Butler Library, which houses millions of books, journals, and special collections. The library serves students, faculty, and researchers, providing access to a vast array of resources. In addition to its extensive physical collections, the Columbia University Library offers digital resources, including e-books, databases, and online journals. The library also hosts various events and workshops to support academic research and promote literacy among its users.