The Casal Graells, Graells Residence, is a Gothic building that has a ground floor and two storeys. Its structural design corresponds to civil architecture for the residences of wealthy families in the Middle Ages in Cardona. It dates back to the 12th-14th century. The City Council restored the building that now is the house of the Municipal Archives and Cardona Historic Foundation.
The murals that were inscribed according to original Gothic lines are well worth seeing.