Three of the 10 panels Ghiberti made for the Baptistery in the Piazza del Duomo in Florence will tour the High Museum of Art in Atlanta, the Art Institute in Chicago and New York's Metropolitan Museum of Art.
The New York Times said the door panels depict scenes from the Old Testament and are so well done that Michelangelo himself said in 1542 that they were "grand enough to adorn the entrance to paradise." They have since been known as "The Gates of Paradise."
High Museum Director Michael Cohen called the works "a turning point in Renaissance art."
The panels are the originals. The Times said the doors in Florence are reproductions that were installed in 1990 so the originals could be kept in a climate-controlled environment to prevent deterioration.