Roman technology and infrastructure allowed their empire to thrive for over 200 years. During this Pax Romana period, they built extensive road and aqueduct systems that improved travel and access to water. Their architectural innovations like the Pantheon's dome and amphitheaters like the Colosseum were engineering feats that were not matched for centuries. Roman cities had indoor plumbing, sewers, and public baths that kept urban areas hygienic by ancient standards. This infrastructure network integrated the empire and supported large urban populations away from natural water sources.