With walls of dazzling white stone beneath gray slate roofs, the picturesque chateau at Azay reflects the waters of the Indre river, 30 km (19 miles) southwest of Tours.
Azay is not near any source of water. 
mnli hypothesis: Azay is not near any source of water.  premise: With walls of dazzling white stone beneath gray slate roofs, the picturesque chateau at Azay reflects the waters of the Indre river, 30 km (19 miles) southwest of Tours.