In the Jardim da Estrela, just inside the basilica side entrance, on the one side students are planting flowers and the other side, a cyclist is waiting for something.
All over Portugal where there are universities or colleges in a town with parks, the students (those studying something relevant) take responsibility for the plants in at least one park in that town/city.
There was no visible sign of something wrong with the bicycle. I just got the idea that he parked it upside down and was resting or waiting. Strange bicycle though, with a different size back wheel.