Google Maps has started doing this, but in a very subtle way. There are several smaller parks that Google Maps has suggested in the general area where I usually

Google Maps has started doing this, but in a very subtle way. There are several smaller parks that Google Maps has suggested in the general area where I usually hike by just showing icons for these parks on a map's zoomed out view. This caught my attention and I tapped on the park names to get more information about them. Google then knows I likely went to these parks because I used Google Maps to get directions to them.