Absolutely beautiful place. I climbed the dome to the observation deck on the top - incredible view. Did St. Pauls and Westminister Abbey in London, the Doumo in Florence, Winchester Cathedral in Hampshire, Papal Basilica in Assisi, Church of the Holy Sepulchre in Jerusalem, Church of the Nativity in Bethlehem (West Bank, Israel), and the Blue Mosque in Istanbul.
I love the designs, frescos, and history of the churches.