3D Wayfinder is a digital building directory application used to help visitors to navigate in large public buildings (shopping centers, airports, train stations, hospitals, universities etc.). 3D Wayfinder uses a 3D model of a building and renders it in real-time, showing also different information layers. Software can be used on interactive kiosks or as a mobile application. The solution enables users to visualise the route from users' position to searched location. At the same time users can zoom, rotate and change floors of building's 3D map. All the existing objects - like escalators, doors, elevators, trees, stairs etc. can be included on the 3D map. Displayed floor plans can be switched and usually the roof of the building is also included on the 3D model of the building to provide better understanding of the building and map direction. The application is currently is use many shopping malls around Europe to guide visitors and keep tenant information up to date. It is able to run on touch screen devices such as in store kiosks and mobiles.