CumeRA is a Mixed Reality mobile application for smartphones, which exploits the expedient of Virtual Portals, a way to restore the enjoyment of the rebuilt church of SantElia, offering a sort of "walk in the past".Through this experience you will be able to revive an old cult building, no longer existing today, recover its memory and enhance its context of use.CumeRA is presented as an application that combines a virtual reconstruction with physical reality,in order to re-propose a cultural asset, erased from memory and forgotten by many, weaving it back into the urban context. Historiographic research and the use of technologies such as photogrammetry and 3D modeling have made it possible to create a historically accurate reconstruction faithful to oral testimonies and historical documents.CumeRA is a very small gesture of re-appropriation of memory, a useful tool to rediscover the place that, for centuries, has been the heart of a community.