This museum (also referred to as Museu Arqueológico e Lapidar Infante D. Henrique) is housed in the former Assunção Convent and was founded to commemorate the 5th centenary of the birth of Infante D. Henrique. The assets of this museum are very valuable and include sections on Epigraphy, Archeology, Paleontology, Ethnography, Archaeological Ceramics, Tiles, Mosaics, Glassware, Weapons, Pinacoteca, Engraving, Heraldry, Numismatics, Medalist, Metrology, Sphragistics and local curiosities.