In the 1700s drawing related to Michelangelo Garove's project, which confirmed and developed the geometric play set in the 17th century, a rectangular area with a central fountain and diagonal avenues is depicted near the Royal Palace. Aligned with the two rows of groves, its surface area corresponds to two groves.
This part of the design was still to be completed when Filippo Juvarra intervened, who created an 'English Garden', i.e. two squares with grassy parterres and uninterrupted development of pergolas. The design for each square departed from a central rectangle inscribed in an ellipse crossed by orthogonal and diagonal paths.
In the current realisation, which covered the area corresponding to one of the two Juvarra squares, pergolas supporting a historical variety of Alberich Barbier climbing roses, which only bloom once a year, have been built with modern structures. The Marie Pavie re-flowering bush roses and climbing roses have their peak flowering time, depending on the season, in May.