a large forum (probably in current Largo dos Lóis) and an aqueduct were built. A circus and hippodrome was built around the 3rd or 4th century AD. Buildings such as insulae (multi-storied apartment buildings) existed in the area between the modern Castle Hill and downtown. The city wall was strengthened in the 4th to 5th century AD, and around the city there were also bridges (in Sacavém and Alcântara) and villae. Economy Economically, Olisipo was known for its garum, a sort of fish sauce highly prized by the elites of the Empire and exported in amphorae to Rome and other cities. Wine, salt and the city's famously fast horses were also exported. The city came to be very prosperous through suppression of piracy and technological advances, which allowed a boom in the trade with the newly Roman Provinces of Britannia (particularly Cornwall) and the Rhine, and through the introduction of Roman culture to the tribes living by the river Tagus in the interior of Hispania. The city was connected by a broad road to Western Hispania's two other large cities, Bracara Augusta in the province of Tarraconensis (today's Portuguese Braga), and Emerita Augusta, the capital of Lusitania (now Mérida in Spain). Government The city was ruled by an oligarchical council dominated by two families, the Julii and the Cassiae. The Caecilli also held some power. Petitions are recorded addressed to the governor of the province in Emerita and to Emperor Tiberius, such as one requesting help dealing with "sea monsters" allegedly responsible for shipwrecks. Around 80 BC, the Roman Quintus Sertorius led a rebellion against the dictator Sulla. During this period, he organized the tribes of Lusitania (and Hispania) and was on the verge of forming an independent province in the Sertorian War when he died. The city was administered by two duumviri and two aediles. Lucius Iulius Maelo Caudicus was one of the duumviri in the 1st century AD. Lucius Iulius Iustus (son of Lucius Iulius Reburrus) was one of the city aedils in the 1st or 2nd century AD. Between 140 and 150 Lucius Statius Quadratus, a governor, was in Olisipo. In 185 Sextus Tigidius Perennis, governor of Lusitania, visited the region. Between 200 and 209 Junius Celanius, a governor, also came to Olisipo. Lucidius was the native Roman governor of the city in 468, having helped the Suebi under Remismund to take it. Religion Olisipo, like most