How i interpret ... a r c h i t e c t u r e

ar·chi·tec·ture:

1. The art and science of designing and erecting buildings.
2. Buildings and other large structures: the low, brick-and-adobe architecture of the Southwest.
3. A style and method of design and construction.
4. Orderly arrangement of parts; structure: the architecture of the federal bureaucracy; the architecture of a novel.

More definitions:

1.Profession of designing buildings, open areas, communities, and other artificial constructions and environments, usually with some regard to aesthetic effect. Architecture often includes design or selection of furnishings and decorations, supervision of construction work, and the examination, restoration, or remodeling of existing buildings.
2.Character or style of building: the architecture of Paris; Romanesque architecture.
3. The action or process of building; construction.
4. The result or product of architectural work, as a building.

Webster's dictionary gives following definitions for architecture:

the art or practice of designing and building structures and especially habitable ones,
formation or construction as (or as if as) the result of a conscious act,
architectural product or work,
a method or style of building.

Architecture may refer to a product, e.g. the architecture of a building, or it may refer to a method or style, e.g. building architecture, the knowledge and styles used to design buildings.