The document discusses the major influence of the sea on Portuguese culture, as seen through literature, music, and architecture. It notes Portugal's extensive maritime exploration from the 15th to 16th centuries. It highlights Luís de Camões' epic poem "The Lusiads" as glorifying these voyages and being a national epic. The genre of Fado music originated in the 1820s and features themes of sadness, longing, and the sea. Manueline architecture from the early 16th century incorporated maritime elements to celebrate Portugal's naval power.