The Medieval Church app allows you to see where "Olavskirka" ("Olav's Church") allegedly stood in Trondheim several centuries ago. If you open this app inside "Folkebiblioteket" in Trondheim, a 1:1 3D model of the historical church will appear on your phone in AR. You can gaze at the church from the outside or meander inside and explore the interior.

In addition to showing the church, this app also displays seven other 3D models in AR that represent parts of the library's history. You can learn more about each of these objects by reading about them and inspecting their 3D models more closely.