2 Answers

Architecture" can mean: A general term to describe buildings and other physical structures. The art and science of designing and erecting buildings and other physical structures. The style and method of design and construction of buildings and other physical structures. The practice of the architect, where architecture means the offering or rendering of professional services in connection with the design and construction of buildings, or built environments.[1] The design activity of the architect, from the macro-level (urban design, landscape architecture) to the micro-level (construction details and furniture). The term "architecture" has been adopted to describe the activity of designing any kind of system, and is commonly used in describing information technology.

Source >http://en.wikipedia.org/wiki/Architecture

the art or practice of designing and constructing buildings.