Ancient Rome began as a small town founded by Romulus and Remus along the Tiber River in Italy in the 9th century BC. It grew to become a massive empire that dominated the Mediterranean world. Roman society was divided between patrician nobles and plebeian commoners. While patricians lived in grand homes with amenities, plebeians crowded into insula apartment blocks with shared facilities. Ancient Romans were also devoted to athletics, gathering at the Campus Martius to exercise and compete, and enjoying chariot races at the massive Circus Maximus racetrack.