Hispania Tarraconensis

Augustus's 27 BCE reorganization of Hispania Citerior into by far the largest Roman province, covering most of the Iberian interior and north; governed directly by the emperor rather than the Senate because of the legions garrisoned there against periodic frontier unrest. Broken up into several smaller provinces under Diocletian's administrative reforms around 298 CE. Its enormous size reflected how much of the peninsula's rugged interior -- Celtiberian, Cantabrian, and Basque territory -- had only recently been subdued by Augustus's own Cantabrian Wars of 29-19 BCE, the last major campaign of conquest in Hispania. Legio VII Gemina, based at what became the city of León, guarded the northwest against continuing unrest and gave the modern city its name and origin. The province's cities minted coinage, built monumental infrastructure, and produced emperors: Trajan and Hadrian, both born in nearby Baetica, built much of their early careers and family wealth within Tarraconensis's economic orbit. By the late 3rd century the province had grown too vast to administer efficiently, and Diocletian's tetrarchic reforms split it into Gallaecia, Carthaginiensis, and a smaller Tarraconensis, reflecting the empire-wide trend toward smaller, more governable administrative units.

• Existed: 27 BCE – 295 CE
• Type: Entity
• Government: Roman province
• Capital: Tarraco (Tarragona)