Bequeathed to the British nation in 1897 by Lady Wallace, the Wallace Collection opened to the public as a museum on 22 June 1900.
Apart from breaks during the two world wars it has been open ever since.
Although by the terms of Lady Wallace's bequest the Wallace Collection is a closed collection (i.e. nothing may be added to it or taken away), many changes have taken place in the way it is presented.
The most spectacular of these was the Centenary Project of 1997-2000 which created many new spaces and facilities.