Interior architecture is the design of a building or shelter from inside out or the design of a new interior for a type of home that can be fixed. It can refer to the initial design and plan used for a building's interior to that interior's later redesign made to accommodate a changed purpose or to the significant revision of an original design for the adaptive reuse of the shell of the building concerned.Generally referred to as the spatial art of environmental design, interior architecture also refers to the process by which the interiors of buildings are designed to address all aspects of the human use of their structural spaces.