Earthships are a type of house that are built using reused materials to construct a structure that is sustainable. Often the earthships are off the gird and can function autonomously from external systems. In the Netherlands, these types of buildings are growing in popularity.
Earthships use dirt- and sand-filled tires to create insulated, fire-resistant walls that are then surrounded by earth berms. A glass conservatory filled with plants on the south-facing side maximizes the sunʼs warmth, directing heat into earth mass walls and floors that radiates within the house when the temperature drops. High-performance wood-burning ceramic heaters provide additional warmth as needed. During summer, inhabitants can lower temperatures by blocking windows. Temperatures are maintained at around fifteen degrees Celsius because of the stable temperature of dirt surrounding the building. Cool air enters through the front windows, and warm air is ventilated out through skylights.