Palazzo Borghese a Ripetta is an example of how architecture can be distilled over centuries of projects and repentances, of additions and transformations driven by changing and contradictory political and economic interests. At the beginning of the 17th century, the building became a battlefield between renovation and conservation forces, eventually producing an irregular, strange cembalo-shape palace in which the axial transparency of perspective is replaced by a polycentric montage of events.
Fabio Colonnese (Wed,) studied this question.