More than 7 billion human beings live in this world, and all in different ways. By adapting to their spatial and climatic environments, have deployed their fullest ingenuity when it comes to shelter: constructing a living space, furnishing and decorating it. Houses on stilts, cave dwellings, terra cotta or cinderblock walls—you don't build a house the same way in Morocco as you do in Finland. In the former, you'd seek coolness and shade; in the latter, you'd prize other materials that trap heat. A broad overview of architectural forms showcasing the variety of responses to the diverse geographical and social settings in which humans have evolved.