ertfordshire covers a largely lowland area, except in the north-west where it is crossed by the Chiltern Hills. The county produces grains and dairy items as well as vegetables and flowers for the London market. Industries include brewing, printing, and light engineering. Remnants of Roman occupation can be found in the region, most notably at St. Albans, where the museum gives a fascinating insight into life in Roman times. During the 15th century Hertfordshire was the scene of many battles of the Wars of the Roses. The county has some fine historic houses, including Hatfield House that dates from Jacobean times.