The symbol of Turin on a perspex panel in front of the Royal Theater....a bull.
Through the panel, one can see to part of piazza Castello where there is the church, San Lorenzo.
Apparently, though, the story about the origin of the Bull, the symbol of Turin, is a different and far more recently tad.
In the Middle Ages, heraldry, is a simple method, given the multitude of illiterate, to bind to a particular symbol a person or any entity. To simplify recognition, usually, it is chosen a figure reminiscent of the name, in the case of Turin, by assonance the Taurus is a defined precisely speaking figure.