The Hill House “Behind the Walls” Augmented Reality app allows you to find out more about the people that lived, worked and grew up at the Hill House with an immersive virtual gallery of historic images combined with audio that you can walk around on your visit to the property. You can also learn about the work of National Trust Scotland together with Historic Environment Scotland in monitoring the condition of the house by interacting with 3D Thermal image scans of key locations in the interior and exterior of the Hill House.