Which Italian Baroque architect designed the Scala Regia in the Vatican?

The Italian Baroque architect who designed the Scala Regia in the Vatican was Gian Lorenzo Bernini.

The Scala Regia, or Royal Staircase, is a ceremonial flight of steps connecting the Vatican’s formal entrance with the Sala Regia, which leads toward important papal spaces including the Sistine Chapel and Pauline Chapel. Bernini designed it in the 1660s for Pope Alexander VII as both an architectural passage and a theatrical statement of papal authority.

The staircase occupies a challenging wedge-shaped space between existing walls. Bernini used a narrowing perspective, diminishing columns, and a controlled play of light to make the stairway appear longer and grander than it actually is. This manipulation of scale is a characteristic Baroque device: architecture becomes a visual experience rather than merely a functional structure.

At the base stands Bernini’s dramatic equestrian statue of Constantine the Great, shown experiencing the vision of the cross before his conversion. The composition links the staircase to the history and ideology of the papacy.

The Scala Regia is sometimes confused with St. Peter’s Basilica or the monumental colonnade in St. Peter’s Square, both also associated with Bernini. The staircase is inside the Vatican complex and serves as a formal route into the Apostolic Palace.