Mita Media Center consists of 3 libraries; Keio University Library, Old Library and South Building Library.
- Most books in Western languages are located in the Old Library which is a Gothic style architecture near the East Gate of the campus.
- Most journals in Western languages are located on the 4th floor of Keio University Library, or the main library, which is a large, beige-tiled building near the center of the campus.
- The South Building is a glass-walled building at the corner of the campus. There is a law/politics library that occupies 3 floors; from Basements 2 through 4. The entrance is located on the Basement 3. The collections of the library include books and journals both in Japanese and Western languages.