St. Colman's Cathedral, also known as Cobh Cathedral, is a stunning Roman Catholic cathedral in Cobh, Ireland. It took over 50 years to build and stands tall with its 300-foot spire, making it the tallest church in Ireland. The cathedral, dedicated to St. Colmán of Cloyne, features intricate Gothic Revival architecture, including rose windows, an impressive spire housing 47 bells, and a beautiful interior clad in marble and granite. Visitors can admire the cathedral's grandeur and even listen to Ireland's only carillon play on special occasions. It's definitely a must-see for anyone exploring the beauty of Irish architecture.