         Sentence 1: Upriver, east of Blois in a huge densely wooded  ark surrounded by 31 km (20 miles) of high walls, the  brilliant white Ceteau de Cham??bord is the most extravagant  Of allthe royal residences in the Loire Valley.    Sentence 2: the ceiff, de Chambord is an ugly  unremarkable hut in an open field