A regionary was an administrative record of the 14 regions of ancient Rome, known today from two 4th-century Imperial examples. It lists and enumerates landmarks, temples, attractions, public facilities, and private buildings region by region.[1] Summary data for the entire city are provided at the end, including streets.[2]
The two extant regionary catalogues are the Notitia de Regionibus (dating to around 337–357 A.D.) and the Curiosum Urbis (357 A.D. or after).[3] They differ from each other only in relatively minor details,[4] but they are "notoriously problematic" as sources.[5] The total given in the concluding summary for any given element doesn't always match the sum that would be obtained by adding the numbers region by region;[6] for example, adding the 14 separate regional figures for insulae (apartment buildings) produces a sum of 44,300, but the overall total given at the end is 46,602.[7] Scholars have varying views on the overall accuracy of the figures they provide,[8] but according to the regionaries, Rome in the mid-4th century had 856 baths (balneae),[9] 144 luxury flushing latrinae (public restrooms),[10] 28 libraries,[11] and 45 brothels large enough to count as tourist attractions.[12]
Filippo Coarelli, a leading authority on the topography of ancient Rome, regards the information in the regionaries as hard data collected by the urban prefect's office.[13] Claude Nicolet compares their value to the Tabulae Heracleenses and the Severan marble plan called the Forma Urbis Romae as documents for understanding Roman administration.[14] They may represent census data in summary form.[15] Some scholars, however, regard them as more like tourist literature[16] and mirabilia such as the Mirabilia Urbis Romae and De mirabilibus urbis Romae, that is, entertaining compilations meant to produce a "wow".[17]
The regionaries organize information region by region, and provide the nickname for each region in addition to its Augustan numerical designation. They list 307 neighborhoods (vici)[18] within the regions along with their officers (vicomagistri, numbered at 48 for each region; xxxxx; xxxxxxx),[19] as well as the buildings and facilities.
A private building is classified as either a domus, a large single-family residence for the elite, or an insula, an apartment building that housed people of varying social classes.[20] For instance, the number of domus in Regio II, the Caelian Hill, was 127; the total for Rome is placed by various scholars at 1,782,[21] 1,790,[22] and 1,797.[23]
The insulae within a region number in the hundreds or thousands,[24] for a total of 44,000–46,000 in the city.[25] Although most Romans lived in insulae even by the late Republic,[26] the number is "incredible", as it yields a per-insula figure of about 250 square meters for the ground floor, around 2,423 square feet[27] (as a comparison, at the beginning of 2009, the average size of a new single-family home in the United States was 2,335 square feet[28]). The regionary data suggest a density of insulae in every region that has contributed to debate about whether the term refers to an entire apartment block or a unit within it, and how many stories tall such buildings would have been. The housing figures have also been applied to studies of classical demography,[29] with mixed success.[30] Whatever the exactitude of the figures, a plausible pattern emerges, with density greatest in the center of the city around the Palatine Hill, the Capitoline Hill, and the Forum, as might be expected. The insulae probably varied from large five-story apartment blocks, of which the insula Felicula in Regio IX was the most notable example,[31] to smaller properties with only two or three floors.[32] The three regions with the highest concentration of both insulae and domus are Regio VIII (Forum Romanum), Regio X (Palatium), and Regio XI (Circus Maximus), which also have the most monumental structures. Housing for people of all social ranks were intermingled with public buildings, and the proportion of insulae to domus within each region varies little.[33]
In the administrative reforms undertaken by Julius Caesar during his dictatorship, the insula became the basic unit of the population census.[34] Citizens for the first time were listed by neighborhood (vicus), through the owner of the property (dominus insularum). Augustus reorganized the city into the regiones and vici, subdivisions that are preserved four centuries later in the regionaries. The character of the lists as administrative documents is also suggested by the inclusion of notes on boards of local officials (vicomagistri and ministri).[35]
Although the Severan marble plan shows units opening onto the street that are presumably storefronts, the regionaries record units of property, not how the space was used. Commercial property is generally not distinguished from housing, except for the kinds of businesses that required separate buildings and were subject to taxation and state oversight, as of the food supply for the city. The census of insulae would have been used to administer the grain dole and other benefits. The units of property thus seem to have been those declared by their owners to the Roman state for administrative purposes.[36]
The regionaries are the sole source for some landmarks such as the Basilica Argentaria, which may have been a place where bronze vessels were sold or financial matters transacted.[37]
Most vici have a horreum, a warehouse for storing grain or other commodities, and a bakery (pistrina), with more than 300 horrea[38] and xxxxx pistrinae throughout the city. This decentralization has been seen as part of a deliberate strategy by Augustus for fragmenting and stabilizing a restive urban population whose needs were taken care of within their neighborhoods, capitalizing on a late Republican trend toward a complex system of dispersed markets that shifted commerce away from the Forum.[39]
The regionaries list some temples, but the criteria for inclusion are unclear. Although both regionaries were created after Christianity became the official religion of the empire, Christian churches known to have existed at the time are not listed.[40] Religious sites, or those associated with myths and legends, include:
According to Frontinus,[54] there were four types of state-supported facilities (usus publici) in ancient Rome.
The regionaries contain information about aqueducts, public water distribution sites, (lacus), and balneae, but the figures pose the usual difficulties of reliability.[55] A lacus was a basin that served as a public water distribution point.[56] Baths in ancient Rome were either thermae, the grand Imperial complexes, or balneae, small neighborhood or private facilities that were far more numerous.[57]
1,352 fountains,[58]
SCREWED UP Statistics pertaining to the water supply include just under a thousand distribution points (lacus), almost a thousand baths (balinea),[59] and 1,352 fountains.[60] Figures are also included for public restrooms (latrinae) and brothels (lupanaria).[61] The latter were perhaps included because prostitutes were taxed and had to be registered with the Roman magistrates called aediles.[62] Vespasian had introduced a tax on urine,[63] which was recycled for xxxxx.
Stabula, horse stables for equestrian events, are listed for Regio IX in the lower Campus Martius near the Trigarium.[64] Four gladiatorial schools are listed.[65]
The inclusion of brothels (lupanaria), but only 45 or 46 of them and only in the Caelian Hill district (LINK|Regio IV), is perplexing. It may be that these were "purpose-built" and constituted a kind of tourist attraction in the city, located conveniently near a major food-market (macellum magnum), the military base for personnel from the provincial armies (castra peregrina), and police and fire station (xxxxx vigiles). Forced service in a brothel was sometimes used as a punishment, and the brothels may have been state-owned.[66] Prostitutes had to register with the aediles in order to work in the city, and the Caelian Hill brothels may have been recorded for purposes of state revenue or taxation.[67]
Elmer Truesdell Merrill provided an amused account of the regionaries' reception:
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The regionaries are collected and edited by:[68]