Heading west from Azay-le-Rideau toward Angers, you cannot miss the towering Ceteau de Saumur.
You can't miss the château de saumer from the west of azay le Rideau. 
mnli hypothesis: You can't miss the château de saumer from the west of azay le Rideau.  premise: Heading west from Azay-le-Rideau toward Angers, you cannot miss the towering Ceteau de Saumur.