This application has old photographs of buildings and streets of Barcelona.

In each image can:
- Consult the data (year, author, description)
- Buy it in different dimensions
- Place it on the map
- Mark it as seen
- Mark as favorite
- Send it by e-mail

There is also the area of ​​Augmented Reality, which can locate with the aid of a radar-sites nearby where photo. The focus on the current building and overlay the old photographs, you can see the differences by changing the degree of opacity of the overlay images.