A mossy viz to try at home

Visualization purists beware. This "viz" is mossy — as in moss.

At first glance, it's a visualization. It represents parks, forests, rivers, and lakes in Berlin, Germany. But then it invites you to touch it, and the map nudges you closer to the real thing.

The mossy-viz idea seems to have begun when Sebastian Meier sought a more sensual experience than he…