Tortosa is located 12 metres above sea level by the Ebre river. It is protected on its northern side by the mountains of the Cardó Massif.

Main sights:

• Castle of Sant Joan
• The Cathedral, begun in 1347
• Bishops Palace
• Convent of Santa Clara, founded in 1283
• Montagut Palace
• Despuig Palace (14th century)
• Oliver de Boteller Palace (15th century)

This website has more information.