Douglas's influences were not from England alone. Although he never travelled abroad, he incorporated Gothic styles from continental countries, especially Germany and France. This combination of Gothic styles contributed to what has come to be known as the High Victorian style. Its features include a sense of massiveness, steep roofs which are frequently hipped, round turrets with conical roofs, pinnacles, heavy corbel tables, and the use of polychromism. Many of Douglas's works, especially his earlier ones, are High Victorian in style, or incorporate High Victorian features. One characteristic feature of Douglas's work is the inclusion of dormer windows rising through the eaves and surmounted by hipped roofs.