William the Conqueror built two castles in York following his defeat of King Harold at the battle of Hastings. One of these was Clifford's Tower. The tower has had a long and eventful history. Clifford's Tower was originally a wooden structure. The stone keep was constructed on the mound in 1245-65 to replace an earlier wooden structure. This photograph was taken on a clear spring day when yellow of the daffodils planted around the motte contrasts with the blue sky above.