The maps include lots of smiling trees, MAX lines and even Wilsonville.
See a larger version here.
Bacon, an actor and graphic artist based in Chicago, started creating Mario maps for fun. They quickly gained popularity and he started getting requests for different cities. He now has 11 maps for sale, including Wisconsin, Tokyo and New York City.
Here's a detailed view of downtown Portland:
Highlights include Beaverton as a castle turret, a shipwreck near Jantzen Beach and a house with chimney smoke in Clackamas.
This isn't the first time Portland has been mapped in the style of Super Mario. Last year, Dave Delise created a Mario style map based on Trimet stops:
You can buy that map here.