Basilica di San Pietro, Rome

People come by the millions each year to receive the Pope's blessing, traditionally given on Sundays at noon. St Peter's has undergone many transformations since the original Constantine basilica of 320 CE. The top of its majestic dome (designed by Michelangelo), provides the best vantage point from which to marvel at Bernini's magnificent colonnade surrounding the square, the gilded bronze canopy above the altar and Michelangelo's Pietà (1499). Bramante, Pietro da Cortona and Canova are just a handful of the many other artists who worked together on this monumental basilica's decoration and design.