An abstract painter in the 1930s, John Piper was also a writer, critic and typographer and his love of architecture – especially medieval churches and stained glass – made him a highly sensitive observer of his surroundings. During the Second World War he became one of the best-known Official War Artists, creating powerful images of the destruction of Coventry Cathedral, the Houses of Parliament and of the city of Bath, as well as recording a wide range of buildings, from derelict Welsh cottages to the grandeur of Windsor Castle.