Almost anywhere, as long as the app can detect a flat surface where a model can be rendered.
To experience inside of a building, the 'dolls house' view is great for 360 degree perspectives. It allows you to experience a model from the inside as if it were a real building.
For outside, models can be experienced in any open site, life-size, in first-person, as if you were standing outside of the real building. Since the camera is used in this app it works best in well lit areas.