House of the Chain of Navalcarnero Monument · Navalcarnero, Comarca Sur, Madrid In the oratory of this house, on 7 October 1649, the nuptial blessing of Philip IV and his niece Mariana of Austria was celebrated; of the building only the doorway survives today, rebuilt in the 19th century, in the heart of the old town. Photo: Zarateman (CC0) What to see and do in Navalcarnero