Al-Masmiyah is identified with the Roman-era town of Phaena. Phaena was the capital of the Trachonitis district of Roman Syria, as confirmed by a Greek inscription on the Roman temple which reads "Julius Saturninus to the people of Phaena, capital of Trachon." The ruins of a Roman era house built in the Batanean architectural style is believed to have possibly served as the home of the Roman governor of Trachonitis. One of the rooms on the ground-level floor was supported by an 18-foot arch and had a cornice-decorated ceiling. The town contains the ruins of a Roman-era pagan temple, called the Praetorium, that was constructed by the commander of the Third Gallic Legion between 160-169 CE during the reign of the Roman emperors Aurelius Antoninus and Lucius Aurelius Verus. In the early 3rd century CE, Phaena was still an important village known as a metrocomia. The Praetorium was transformed into a church during the Byzantine era and the structural plan makes it one of the oldest examples of Byzantine church architecture. The ancient city of Phaena had a radius of roughly three miles, making it as large as the ancient walled area of Damascus and larger than the Old City of Jerusalem. During the Byzantine era it became an episcopal see.
In 1810 Swiss explorer Johann Burckhardt was the first contemporary scholar to visit al-Masmiyah and he was later followed by Bankes and Barry, who sketched a precise plan of the Praetorium, in 1819. In 1838 Biblical scholar Eli Smith reported that Kurds inhabited the village. By the late 1860s a few impoverished Arab families from the Sulut tribe reportedly lived inside the ruins of al-Masmiyah. Apparently, the village was abandoned most of the time, but was occasionally occupied by nomadic Arab families seeking shelter in its ruins. In the 1870s al-Masmiyah was an uninhabited village. However, it was later settled when the Ottoman sultanAbdul Hamid II acquired al-Masmiyah and six other nearby Hauran villages in the late 19th century as a personal estate. The farmers he employed in the village were afforded security, giving them protection from nomadic raiders. They were also exempt from conscription, protected from monetary collections from local notables and at times were loaned money without interest. These factors resulted in the prosperity of al-Masmiyah and the larger estate. In 1875, before Abdul Hamid's reign, the Ottoman army took apart the Praetorium for the construction material used to build a nearby army barracks at Burraq. The temple had earlier been photographed by Tancrède Dumas. It still remained the subject of study by scholars in Greco-Roman architecture after its dismantlement. In 1886 al-Masmiyah was briefly occupied by the Druze clans of Atrash and Halabi during a quarrel with the Sulut tribe. Following the Young Turk Revolution in 1908, the sultan ceded estate to the treasury department of the Damascus government and consequently, the inhabitants, who were both tenants of the government and permanent residents of the villages, had to pay 20-22% of their agricultural products to the authorities. Nonetheless, the conditions of the inhabitants of the government estate were better than the estates of the notables. In 1915 the population of al-Masmiyah was estimated as 300 Melkites and 20 Sunni Muslims.
Archaeological remains
According to Western traveler Josias Leslie Porter who visited the region in the late 1850s, the ruins of al-Masmiyah "are among the interesting and beautiful in the Hauran." The majority of the village's ancient homes were in rubble, but a number of public buildings were relatively well-preserved. Porter further remarked that except for the Roman temple "there are several other buildings... but they are not remarkable either for their size or architecture.
Roman temple
Along with the Roman temple dedicated to Tyche in nearby al-Sanamayn, the Praetorium of al-Masmiyah is the only Roman temple in the Levant that contains niches for statues in the cella. This unique feature in Roman architecture was likely inspired by pre-Roman architecture, particularly the temple of Baal-Shamin in the Syrian Desert town of Palmyra or in various Arabian cities. The Praetorium was situated atop a podium in a temenos surrounded by colonnades. It was relatively small, measuring 24.8 x 16.4 meters. It has a rectangular ground plan with a semi-circular apse that projects onto one side of the building opposite of the doorway. Both sides of the doorway contained niches reserved for statues. The interior space consisted of a single room, which was the naos, and measured 15.09 x 13.78 meters. The Praetorium was formerly topped by a square domed roof, likely a cloister vault, which had since collapsed. The roof is supported by four free-standing columns fixed at the inner angles of cross-vaulted arches, which together form a Greek cross. On the opposite end of each columns stood a half-column, making for a total of four main columns, eight half-columns, and four quarter columns inside the naos. The arches sit on lintels that span the space between the outer wall and the columns supporting the roof. There were six niches against the walls that were reserved for the placement of statues and in the center of them was the main space, the adyton, used to hold the main statue of the pagan cult. The adyton was topped by a conch-shaped falf-dome. The building had two windows, a rare feature in Classical pagan temples, and a total of three entryways. Of the entry ways, there was a principal central doorway that was higher and broader than the two side-doors. The church ruins contained a partially destroyed portico with six columns. The material used for the building was dry stone. Other than the dome and the portico, the building had been well preserved in the 19th century.
Demographics
According to the Syria Central Bureau of Statistics, al-Masmiyah had a population of 1,498 in the 2004 census. It is the administrative center of the al-Masmiyah nahiyah which consists of 16 localities with a collective population of 8,773 in 2004. As of the early 20th century, its inhabitants were largely Melkite Christians, though there was a small Muslim community as well. In 2004, the village still had a significant Melkite Christian population.