If not for a religious visit, book a trip to view these cathedrals and basilicas. Marvel at the beautiful architecture and artworks created by the world's most talented artists, like Michelangelo's St. Peter's Basilica in Rome. Listen to the bells at Notre Dame cathedral in Paris, which weigh over 13 tons. Marvel at the Sagrada Familia in Barcelona, a magnificent structure that has yet to be finished despite its 1882 construction start date.
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