Our Lady, Queen of the Most Holy Rosary Cathedral is a Roman Catholic church located at 2535 Collingwood Boulevard in the Old West End of Toledo, Ohio. The cathedral is the mother church of the 122 parishes in the Roman Catholic Diocese of Toledo. This cathedral is unique architecturally in that it was designed in the Spanish Plateresque style. It was designed with Toledo's Sister City, Toledo, Spain in mind. Finished in 1931, it was built in the spirit of the great European cathedrals of the Middle Ages.