- ...that a study on chemical analysis by Luís da Silva Mouzinho de Albuquerque, a Portuguese military officer, scientist and statesman of the 19th century, motivated a special answer-like report by two of the most prestigious scientists of the time: Jean-Antoine Chaptal and Joseph-Louis Gay-Lussac?
- ...that the Mafra National Palace was built during the reign of King John V of Portugal, in consequence of a vow he made, promising to build a convent if his wife, the Queen Mary Anne of Austria, gave him descendants.
- ...that the Order of Infante D. Henrique is a Portuguese honorific order that distinguishes relevant services for Portugal, in the country or in foreign ones, in the expansion of the Portuguese culture, its history and its values?