Dome of Saint Peter's Basilica
(mouse click on image
twice for magnified view)
The dome of St. Peter's Basilica is the tallest dome in the world. From
floor to the top of the external cross, it rises to a total height of 448
feet. Its internal diameter is 136.1 feet, slightly smaller than two of
the three other huge domes that preceded it, those of the Pantheon and
Florence Cathedral.
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