Belem Tower is an iconic historical building in Lisbon. It was built in the 16th century and is located on the banks of the Tagus River. It was once a watchtower during the Portuguese Age of Navigation. Its unique Manueline architectural style combines Gothic and Mudejar elements, with an exquisite appearance and rich decoration. There is an exhibition in the tower, showing the history of navigation and the glory of the Portuguese maritime empire. As a UNESCO World Heritage Site, Belém Tower is not only a historical symbol of Lisbon, but also an ideal place for tourists to experience Portugal's maritime culture.