With this map, I wanted to find the areas with fewer of these trees so I could walk around in peace. Click on the map to open the page.

These are the seeds of this tree:

By Philmarin - Own work, CC BY-SA 3.0, Link

And this is how many streets in Barcelona end up:

By Lamiot - Own work, CC BY-SA 3.0, Link

On windy days, this becomes a problem not only for allergic people, because these fibers will get in your eyes and they are irritating. The city knows and from the current 44.281 plane trees, ithas plans to remove around half of them and plant other species.

Data has been obtained via Open Data BCN service from Barcelona city council.