PS how the production of mosaic puzzle?

PS how the production of mosaic puzzle?
Is to see in the distance is a map to see nearly really a small number of plans put together by the
how to achieve this effect on this

filter there – texture – mosaic puzzle solutions are upstairs, but called Mosaic paste.

through the patchwork map can be another effect , Are in texture.

Mosaic pixels there are, there is a kind of glass to see what you like.Filter ~