The urban artist for these "space invaders" is called simply "Invader" and guards closely his identity. These mosaics were started in Paris in the mid-90s where he lives and they are found in 31 other cities in France. He calls the installation an "invasion" and creates books and maps for the specific locations.

I have been photographing them for years but the thrill is not so much in the shot (I mean it's not like they are going to run off while you focus and set the F-stop) but it is the discovery itself. So, I will not have a regular display of these guys* made of durable ceramic tile but thought you would like to see how carefully the ivy has been trimmed around this one found in Montmartre.

*unless I start running short on photos