From the top of the grand staircase, this gives the impression that the entire garden is revealed in one single glance. Initially, the view consists of symmetrical rows of shrubbery, avenues, fountains, statues, flowers and other pieces developed to imitate nature: the elements exemplify the Baroque desire to mold nature to fit its wishes, thus using nature to imitate nature. The centrepiece is a large reflecting pool flanked by grottos holding statues in their many niches. The grand sloping lawn is not visible until one begins to explore the garden, when the viewer is made aware of the optical elements involved and discovers that the garden is much larger than it looks. Next, a circular pool, previously seen as ovular due to foreshortening, is passed and a canal that bisects the site is revealed, as well as a lower level path. As the viewer continues on, the second pool shows itself to be square and the grottos and their niched statues become clearer. However, when one walks towards the grottos, the relationship between the pool and the grottos appears awry. The grottos are actually on a much lower level than the rest of the garden and separated by a wide canal that is over half a mile (almost a kilometre) long. According to Allen Weiss, in "Mirrors of Infinity", this optical effect is a result of the use of the tenth theorem of Euclid's "Optics", which asserts that "the most distant parts of planes situated below the eye appear to be the most elevated".