Heritage Open Day: Join the imaging services team at their discovery station in the Weston Library's Blackwell Hall and explore some of the wonders of their work photographing the collections of the Bodleian Libraries. The Bodleian Libraries at the University of Oxford is the largest university library system in the United Kingdom. It includes the principal University library – the Bodleian Library – which has been a legal deposit library for 400 years; as well as 27 libraries across Oxford including major research libraries and faculty, department and institute libraries.