The perspective vision that is obtained creates a sort of apparently inexplicable optical effect.
In fact, moving backwards from the main entrance door of the Palace, the front entrance of the Church of Santa Maria in Campitelli begins to "move" from left to right until it coincides perfectly only when you reach the threshold of the door of the Palazzetto.
It is necessary to underline that at the time of planning the facade of the current Church had not yet been built and that the birthplace of Blessed Ludovica Albertoni, the true spiritual authority of the family, was located on the same site.
The Paluzzi Albertoni had therefore probably wanted to keep the view from door to door to keep a constant memory of the Blessed.
A part of the perimeter wall of the house of the Blessed is still visible with an ancient fresco inside the Chapel of the Albertoni family in Santa Maria in Campitelli.

Another effect produced is the loss of "orientation" within the two buildings: in fact, visiting the rooms from the inside, it is not fully realized if its position is in the large body of the Palace or in the other smaller, so called Palazzetto.
A further visual peculiarity is that concerning the "secret" hanging garden, visible from the entrance of the flyover to the first floor of the Palazzo grande, although it is "hidden", as a rear offshoot of the first floor of the Palazzetto and therefore far from the square.
The perspective vision that is obtained creates a sort of apparently inexplicable optical effect. In fact, moving backwards from the main entrance door of the Palace, the front entrance of the Church of Santa Maria in Campitelli begins to "move" from left to right until it coincides perfectly only when you reach the threshold of the door of the Palazzetto. It is necessary to underline that at the time of planning the facade of the current Church had not yet been built and that the birthplace of Blessed Ludovica Albertoni, the true spiritual authority of the family, was located on the same site. The Paluzzi Albertoni had therefore probably wanted to keep the view from door to door to keep a constant memory of the Blessed. A part of the perimeter wall of the house of the Blessed is still visible with an ancient fresco inside the Chapel of the Albertoni family in Santa Maria in Campitelli.
Another effect produced is the loss of "orientation" within the two buildings: in fact, visiting the rooms from the inside, it is not fully realized if its position is in the large body of the Palace or in the other smaller, so called Palazzetto. A further visual peculiarity is that concerning the "secret" hanging garden, visible from the entrance of the flyover to the first floor of the Palazzo grande, although it is "hidden", as a rear offshoot of the first floor of the Palazzetto and therefore far from the square.
Palazzo Albertoni Spinola