The Cotswolds is a range of hills in west-central England, sometimes called the "Heart of England", an area 25 miles across and 90 miles long. The area has been designated as an Area of Outstanding Natural Beauty. The Cotswolds lie mainly within the counties of Gloucestershire, Oxfordshire and Warwickshire, but also extend into parts of Wiltshire, Somerset and Worcestershire. The houses in the Cotswold are known for being built from beautiful old yellow stone. There are many chocolate box/picture postcard villages in this area to visit.