"The cathedral city of Hereford is one of the best-kept historical secrets of the Welsh Marches. Although its Anglo-Saxon development is well known from a series of classic excavations in the 1960s and '70s, what is less widely known is that the city boasts an astonishingly well-preserved medieval plan and contains some of the earliest houses still in everyday use anywhere in England. Three leading authorities on the buildings of the English Midlands...