Alcobaça is dominated by its magnificent Monastery — a masterpiece of Portuguese Gothic architecture and a UNESCO World Heritage Site, founded by Afonso Henriques in the 12th century to fulfil a vow made before the Battle of Santarém. Inside lie the ornate tombs of King Pedro I and Inês de Castro, the tragic love story that inspired Camões. The municipality stretches to the Atlantic coast, where beaches like Paredes da Vitória invite visitors to relax beside the sea.