The Irving K. Barber Learning Centre houses the Rare Books and Special Collections (RBSC) and University Archives divisions (level one) and the Music, Art and Architecture (levels three and four). The Chung Collection, a designated national treasure, is located in the RBSC space, and focuses on the Canadian Pacific Railway, the Asian experience in Canada, and West Coast history and exploration. The Learning Centre is also home to the Chapman Learning Commons on level three, located in the restored historic core of the old Main Library.