‘Los Angles˚ is a level for your phone. Not just any level– as you tip your phone the angle at which it is tipped (0˚– 90˚) will reveal a photograph roughly correlating to that year (1900–1990) in Los Angeles infrastructural history: its tunnels, bridges, pipelines and other public projects.

First, lock your screen's orientation: swipe down from the upper right corner of your screen. Press the button with the lock so the icon turns red. Now, click here.