Kilmacduagh Cathedral is a historic site located in County Galway, Ireland. It was founded in the 7th century by Saint Colman, and it served as an important center for Christianity in the region. The cathedral complex includes several structures, such as a round tower, which is one of the tallest in Ireland, and various churches that showcase medieval architecture. The cathedral is known for its unique features, including its Romanesque style and intricate stone carvings. It is part of the Kilmacduagh Monastic Site, which attracts visitors interested in Ireland's rich ecclesiastical history and architectural heritage.