Tortosa (Latin: Dertusa or Dertosa, Arabic: طرطوشة Ṭurṭūšah)'s the capital of the comarca of Baix Ebre, in the province of Tarragona, in Catalonia, Spain, located at 12 metres above the sea, by the Ebre river. Population 34,832 (2007). After more than four hundred years of Muslim Arabic rule, the city was conquered by the Count Ramon Berenguer IV of Barcelona in 1148. History Climate Parks Demography… (More on Tortosa)