Vernacular architecture is characterized by the use of local materials and knowledge without professional architects. It uses simple, practical designs suited to the environment. Materials may include bamboo, mud, timber, stone, and later plastics and concrete. Each example follows traditions of the region. Factors like climate, available materials, culture, and lifestyle influence the forms. In different climates, structures are adapted through site orientation, insulation, ventilation, and other techniques. Vernacular architecture evolves over time based on the environmental, cultural, and historical context.