A granary is a building or structure used for storing grain. It is designed to protect harvested crops from pests, moisture, and other environmental factors that could spoil the grain. Granaries can be found on farms or in larger agricultural facilities, and they play a crucial role in food storage and supply. Traditionally, granaries were made from wood or stone, but modern granaries often use metal or reinforced concrete. They can vary in size, from small structures for individual farms to large silos that hold vast quantities of grain. Proper ventilation and temperature control are essential to maintain the quality of the stored grain.