House of the Griffins Monument · Alcalá de Henares, Cuenca del Henares, Madrid A Roman domus of the mid-1st century, inhabited until a fire destroyed it in the 4th century. Its courtyard of 99 square metres, surrounded by twelve columns, preserves the wall paintings of griffins that give it its name. Photo: Raimundo Pastor (CC BY-SA 4.0) What to see and do in Alcalá de Henares