The modern neighbourhood of Ostia was founded in 1884, near the remains of Ostia Antica. This was possible after reclamation of the nearby marshland, which was infested by malarial mosquitos.
The contemporary district of Ostia was established in 1884, close to the ruins of Ostia Antica. This became feasible after reclaiming the adjacent marshy area, which was plagued by malarial mosquitoes.