This document discusses the key concepts of form, space, and their organization in architecture. It defines space as the three-dimensional area where matter exists. Architectural space is any space divided by walls and enclosed by a roof. Spatial relationships like adjacent, interlocking, and linked spaces are important for organizing forms. Common spatial organizations include centralized, linear, radial, clustered, and grid patterns. The three pillars of architecture that define a structure are its defining structure, functional program, and aesthetic design. Structural design must consider loading, serviceability, and limits, while aesthetics aim to balance creativity with avoiding incongruous designs.