Main Square of Colmenar de Oreja Monument · Colmenar de Oreja, Las Vegas, Madrid A Castilian arcaded square begun in 1676 and completed in 1794, with limestone arcades quarried in the municipal district itself, above which rise the town hall and the public granary; a stone tunnel runs beneath its south side beside the Zacatín garden. Photo: Zarateman (CC0) What to see and do in Colmenar de Oreja