Shipping container architecture is a form of architecture using steel intermodal containers (shipping containers) as structural element. It is also referred to as cargotecture, a portmanteau of cargo with architecture, or arkitainer.The use of containers as a building material has grown in popularity over the past several years due to their inherent strength, wide availability, and relatively low expense. Homes have also been built with containers because they are seen as more eco-friendly than traditional building materials such as brick and cement.