By decree of July 22, 1863, it created the Marine Museum at the initiative of King Louis. The father of this monarch, the king consort D. Fernando II was quite interested in cultural issues, and certainly sought to instill this like in your children. His eldest son, D. Pedro V, showed, in his short reign, a high interest in cultural and artistic issues. D. Luís, as a second son, followed a career in arms, as a naval officer. However, his brother's untimely death led him to abandon that career, becoming king. His deep knowledge of the naval reality, on the one hand, and the high culture that he had, on the other, allow us to understand the creation of the Maritime Museum during his reign. As a Museum "of" the Navy and not just "of the" Navy, it seeks to show the Navy in its broadest sense, that is, in its various aspects: military, commerce, fishing and leisure. Despite having older pieces, for example from the Roman Period, the museum's museological discourse begins essentially in the golden period of the Portuguese Discoveries. From there, it tells the story of the relationship between the Portuguese and the Sea. The objects that help tell this story are quite varied: models of real ships and vessels, paintings and engravings, decorations and weapons, navigation charts and navigation instruments, photographs and diplomas, among many others. Lisbon, Portugal