"CFCP’s TraceTwo Project is a home to migrants living in Ireland, bringing them together through photography. Shared images allow people to glimpse different cities and environments whilst defining the similarities among culture, architecture and people in different parts of the world with their relationship to the host country."
Basically, you register to the website www.tracetwo.com . From there you can upload two images from different countries, distant places or time that have some similarity, as in the photo above. You can also add a photo to an existing one and create a new similarity. The project is Dublin based (CFCP are at 15 Pembroke Street Lower, D2) and aims to connect people through photography.
As it's a new project there aren't that many photos uploaded yet but it looks like it could be really interesting to follow.