The following article focuses on built environment, the architecture of spaces designed for human habitation. To immediately skip to other specialised uses of the term "architecture" see architecture (disambiguation).

Architecture (from Latin, architectura and ultimately from Greek, αρχιτεκτων, "a master builder", from αρχι- "chief, leader" and τεκτων, "builder, carpenter") is the art and science of designing buildings and structures.

A wider definition would include within its scope the design of the total built environment, from the macrolevel of town planning, urban design, and landscape architecture to the microlevel of creating furniture. Architectural design usually must address both feasibility and cost for the builder, as well as function and aesthetics for the user.