Peristylium
An open, colonnaded courtyard
Peristylium (plural peristylia) is a Latin term referring to an open courtyard surrounded by rows of columns (columnae) on all four sides, from which the English word “peristyle” derives. Peristylia could be found in both public and domestic settings, but they appear most frequently in the ancient Roman world in domestic settings attached to domus (houses) or villae (country estates). The peristylium in ancient Rome served multiple purposes, and these purposes varied depending on the wealth and status of their owner. Typically, a Roman domus or villae would center around two main focal points: the atrium at the front of the house, and the peristylium at the back. The peristylium was an open-air courtyard that provided relief from the dark, smaller rooms branching off the atrium; and most of the rooms branching off of the peristylium would have been larger and often more lavishly decorated, often with more light access. Peristylia seemed to have spread in popularity in Roman Italy throughout the second and first centuries BCE, and some of the earliest examples of peristylia in places like Pompeii appear to have been built as additions on the back of domus and villae without any rooms branching off of them, possibly to resemble public ambulatories (covered walkways) (Flohr, 2005). The peristylium was often used for growing gardens (horti), though horti did not have to be cultivated within peristylia, and some wealthier property owners had both peristylia and separate horti on their properties. The hortus within a peristylium could contain both decorative and productive plant life, and often food production played a role in the agricultural pursuits of wealthy Romans whether or not they needed it for sustenance or income. The wealthier horti in a peristylium would typically include statues, water features and fountains (fontes), mosaics, and both native and exotic plants for pleasure and food production (Scott, 2002). While peristylia and horti appear to have served very similar functions, there is an obvious distinction between the two in Latin literature, with peristylia being more specifically defined by their architectural form than by the functions they served.
Bibliography
Latin Dictionary Entry
Peristylium - Perseus Digital Library
Jay Brodzeller, 2022