Early hands-on experiences with the Microsoft Hololens augmented/mixed reality device have given promising results for building evacuation application. A range of use cases are tested, including data visualization and immersive data spaces, in-situ visualization of 3D models and full scale architectural form visualization. Our Hololens application gives a visual representation of a computer science building in 3D space, allowing people to see where exits are in the building. It also gives path to the various exits; shortest path to the exist as well as directions to safe zone.