Unexpected Twist

A few days ago, I walked with my children, and we passed in front of this revolving door. I told my oldest son (four years) to enter, and he was amazed to see that the door turned. The moment was a bit of Charlie Chaplin, because all we did was turn.
The revolving door of the picture, is the entrance to a bank in Trapería street. The bank is in the House-Palace of the Pagan (Casa-Palacio de los Pagán).
As for the story of the door, the only thing is that these types of doors were invented to prevent robberies, as thieves would have to go into with their weapons raised or elevated.