LEGION is part of the Bentley Systems solutions offering and is focused on understanding people movement. Our scientifically validated software accurately simulates and analyses people’s step-by-step journey through infrastructure. Rail/metro stations, stadia, shopping malls and airports managers work with us to model, test and deliver operational, commercial, footfall, wayfinding, crowd management and safety/security strategies. Cities around the world are growing at unprecedented rates, putting infrastructure operators under pressure to provide safer and more efficient public venues within budget constraints. The key goal of a Legion project is to optimise the use of space, directly translating into improved safety, efficiency and revenue. LEGION simulator is based on extensive scientific research of people behaviour in real contexts. As it microscopically accounts for individual decision making, crowd formation and patterns of movement emerge naturally. The algorithms are patented, and simulation results have been validated against empirical measurements, qualitative studies and by over two decades of application worldwide. Transport agencies (London, Santiago, Beijing and many others), events (London2012, Brazil2014, Rio2016, etc) and their respective suppliers (AECOM, Atkins, Systra, etc) have been working with Legion for over 20 years to iteratively design – on a BIM compliant environment – test and operate infrastructure from the drawing board to legacy delivery.