Langdell Hall is the largest building on the campus of Harvard Law School in Cambridge, Massachusetts. It is home to the school's library, the largest academic law library in the world, and is named for pioneering law school dean Christopher Columbus Langdell. It is built in a modified neoclassical style. In 1959, the International Legal Studies building, now the Lewis International Law Center, was constructed to house approximately 300,000 volumes in open-stacks.