There is no baked lighting in this scene
The demo relies on Precomputed Realtime GI and realtime lighting throughout. It has a full time-of-day cycle, emissive geometry, about 100 animated spotlights that come alive at night, as well as a number of floodlights on stands and an optional player flashlight. The time-of-day cycle uses an animated skybox that is synchronized with the sun in order to capture the subtle lighting changes.
Created by Alex Lovett (Concept, Direction, Art Direction, Lighting, Environment art, Scripting) and Thomas Pasieka (3D Art). More more at http://blogs.unity3d.com/2015/11/05/awesome-realtime-gi-on-desktops-and-consoles/