Edinburgh University Library is the main library of the University of Edinburgh and one of the most important libraries of Scotland. The University Library was moved in 1827 to William Playfair's Upper Library in the Old College building. The collections in Edinburgh University Old College were moved in 1967 to the purpose-built eight-storey Main Library building at George Square, one of the largest academic libraries in the world. Today, Edinburgh's university-wide library system holds over 3.8m books, e-books and e-journals in total.