The Loire Valley, spanning 280 kilometres (170 mi), is a valley located in the middle stretch of the Loire river in central France, in both the administrative regions Pays de la Loire and Centre-Val de Loire. The area of the Loire Valley comprises about 800 square kilometres (310 sq mi).
It is referred to as the Cradle of the French and the Garden of France due to the abundance of vineyards, fruit orchards (such as cherries), and artichoke, and asparagus fields, which line the banks of the river. Notable for its historic towns, architecture, and wines, the valley has been inhabited since the Middle Palaeolithic period. In 2000, UNESCO added the central part of the Loire River valley to its list of World Heritage Sites.
The architectural heritage in the valley's historic towns is notable, especially its châteaux, such as the Château de Montsoreau, Château d'Amboise, Château d'Azay-le-Rideau, Château de Chambord, Château de Chinon, Château du Rivau, Château d'Ussé, Château de Villandry and Chenonceau.
The châteaux, numbering more than three hundred, include the necessary castle fortifications built in the 10th century but also the splendour of those built half a millennium later.
When the French kings began constructing their huge châteaux here, the nobility, not wanting or even daring to be far from the seat of power, followed suit. Their presence in the lush, fertile valley began attracting the very best landscape designers. In addition to its many châteaux, the cultural monuments illustrate to an exceptional degree the ideals of the Renaissance and the Age of the Enlightenment on western European thought and design.
Many of the châteaux were designed to be built on the top of hills, one example of this is the Château d'Amboise. Many of the châteaux had extremely detailed and expensive churches on the grounds, or within the actual château itself.
According to en.wikipedia