Founded in 1848, the Boston Public Library contains over 23 million items, making it the second largest public library in the U.S., after the Library of Congress. Of those millions, about 1.7 million are rare books and works, including medieval manuscripts and incunabula (a book or pamphlet printed prior to 1501 in Europe). Among the rare books are also the personal library of John Adams, early editions of works by William Shakespeare, drawings from Thomas Rowlandson and musical archives from the Handel and Haydn Society.
The McKim Building, with its vast research collection, and the Johnson Building, where you can find the circulating collection, are two of the most important parts of the library. The McKim Building is even a National Historic Landmark. And while the library system technically includes a whopping 24 branches, the original Copley Square location offers plenty to see, including Bates Hall, the Chavannes Gallery, the Abbey Room and the Sargent Gallery.