Santa Eulalia del Río (Ibizan Santa Eulária del Riu) lies 15km/9mi northeast of Ibiza Town on the only river on the island with a reasonably regular flow - though in recent years it has increasingly been running dry as a result of the rise in consumption of water. The simple cube-shaped houses of the old town cluster picturesquely round the hill
crowned by the fortified church of Santa Eulalia. On the southwest side of the town is a Roman viaduct spanning the Río Santa Eulalia.
The surrounding beaches and villages were a favorite haunt of hippies during the 1960s, but Santa Eulalia is now a well ordered and well equipped holiday resort.