Over the past few years, these gym machines have been popping up in parks across the city. One of them is located in the park where I usually start and end my runs. In the afternoons the kids from the nearby playground take over the machines (which they technically aren’t allowed to, except nobody cares). Since I prefer to work out in the mornings, the machines are usually available to people like me who like to add some strength training after the run.
HERE is a list of Free Gym locations as of now.