The most important is Santo Estevo de Ribas de Miño. This monastery was constructed in the 12th century. It is said the same stonemason (Master Mateo) that designed the Portico da Gloria for the Cathedral in Santiago de Compostela designed this building too, but there is no basis for this tradition. The main door does resemble the Portico, but in a smaller version, with artistic connections to the portals of San Xoan de Portomarin and the cathedral of Ourense. The unusual western crypt is also said to resemble the one in Santiago. The living quarters and cloisters no longer remain. The Church has the largest Rosaton (round) window in Spain. After the decay of some parts of the monastery the stones were used to build village houses. The church is still used today for wedding, funerals, baptisms and mass.