Created 06/2015 - using Unity 5.1 (Pre-Cinemachine and Timeline) - The building structure within Unity utilized a Revit model exported as .fbx from Blender.  There was actually a ton of geometry that was hard to optimize for culling.  This project provided fly around renderings to employees before mass-relocation to new work site.  The flyaround did things the hard way - through scripting and tweening. This project later turned into an Oculus VR project - placing the viewer in certain building locations.