View of the Castle of Caerphilly in Glamorganshire, Wales

This romantic, foliage-covered ruin used to be one of the great castles of Wales. It was built by Gilbert de Clare during the 1270s and is an example of the most advanced military architecture of its day.

The artist, Archibald Robertson, was a Royal Engineer, trained in military draughtsmanship at the Royal Military Academy in Woolwich. Distinguished artists such as Paul Sandby tutored the trainees and as a result many engineers became very capable artists in their own right.