The site of the bridge, in which the tale "The Strongest" was filmed, is actually the 60th kilometer on the route between Cafayate and Salta, as the character in the tale mentions. This place has become a kind of a tourist attraction nowadays, as can be seen in Google Street View at coordinates (-25.730669,-65.6967926).
The film's original screenplay is 84 pages long and some of the six tales are featured in a different order. It also includes a seventh tale, shorter than the other ones, called Bonus Track.
During the credits at the beginning, each main actor of each tale is identified with a wild animal. In the director's case, it is a fox. Szifrón said that this was because his father had liked foxes a lot, and had used to watch lots of documentaries about them. He also felt identified with that picture, more specifically with the fox's gaze, as the job of a director is in the gaze.
The film came about because Damián Szifrón had so many ideas for films that he knew he would never be able to make them all. So instead he decided to keep the ideas very simple and film several of them together as an anthology film.
Each tale is increasingly longer than the previous one.