The city of Alcobaça became notable after the First king of Portugal, Afonso Henriques, decided to build there a church to celebrate the conquest of  Santarém to the Moors, in 1147. The church later evolved into the Monastery os Alcobaça, one of the most magnificent gothic monuments in the country. In the church are the tombs of  King peter I and his murdered mistress Inês de Castro.

A few kilometers to the north of Alcobaça is located the Monastery of Batalha, another wondrous gothic building constructed in memory of battle of Aljubarrota. To the west of Alcobaça is the well-known former fishing village of Nazaré.