QEII Courtyard at the British Museum

Until recently, the British Library was located in the same building as the British Museum. The round building, at the right of the photo, houses the round Reading Room. The Reading Room is at the centre of a square courtyard in the middle of the Museum complex. Until 1998, this courtyard was filled with the Library's book stacks. When the library outgrew the location, it was moved a new purpose-built complex at St Pancras. With the stacks removed, the courtyard was capped with a spanking new glass roof. It is a sensational space. There are more pics in my British Museum set of photos.