The Science of Wayfinding is the first comprehensive book to focus on the planning, psychology, and strategic development of wayfinding systems, revealing the underlying framework that makes navigation truly intuitive in today's most complex environments. Drawing on over 25 years of global project experience, from Olympic stadiums and Super Bowl venues to convention centers and entertainment districts, the author offers a tested methodology that blends human-centered design, behavioral analysis, and operational planning. The book outlines how to guide millions of people through high-volume spaces using principles grounded in environmental psychology, inclusive design, and real-world observation. Written for architects, designers, planners, and venue operators, this book provides a step-by-step process for creating systems that are not only legible, but empathetic, equitable, and aligned with user behavior. Readers will learn how to name, organize, and communicate space across scales through diagrams, case studies, and proven planning tools. At its core, this book argues for a cultural shift: from treating wayfinding as a signage afterthought to recognizing it as an integral and critical part of user experience, crowd safety, and placemaking. Whether you're planning a global event or improving a campus, this book equips professionals to create environments that welcome, orient, and empower everyone who enters.