Castles were more than military posts; they were the centers of political and economic power. As government headquarters they were built to impress t… - Marilyn Stokstad

Wherever they went, William and his Norman lieutenants built castles. About 170 great vassals came to England with William. When the king rewarded his followers with grants of land, they also assumed the responsibility for its defense, so each built one or more castles. William and his men had several reasons for building castles. As hostile invaders they had to fortify their dwellings and camps in order to hold the territory and provide security for themselves. Their castles also secured borders and coastlines against other invaders and controlled the movement of people and goods at key transportation centers such as fords, bridges, and passes and along major roads.

Stone towers appeared early in the Loire River valley. The massive ruin at Langeais, recently dated 992, was once a broad tower with four corner turrets. Today it stands in the park of a fifteenth-century chateau. Not far off, at Loches, the tower is the earliest surviving great tower to combine within its walls a hall, the lord’s chamber, and a chapel. Recent analysis of the wood used in the original building has dated this tower between 1012 and 1035.

Castles continued to be the focus of economic activity as the center of an agricultural domain. Wealth continued to be measured in land and its produce. The only access the lord had to his wealth was to move from one estate to another consuming products from the harvests. Housing and feeding a household including retainers and servants required vasts amount of food and space for food preparation.