On his architectural tour of Britain, David Dimbleby discovers how the Georgian dream of order and beauty transformed our buildings and cities. Travelling west, he discovers the grandeur of Blenheim Palace, the man-made paradise of Stourhead garden in Wiltshire and the elegance of Bath. He pays tribute to the terraced house, a great British invention, before discovering the tin mines of Cornwall and crossing the mighty Menai Bridge to the Georgian jewel of Dublin.