Amid its 300 acres, the park has three churches, replicas of all of Michelangelo's works and a copy of Leonardo da Vinci's "The Last Supper" in stained glass.
And, like all consumer toys, copycat manufacturers from the Far East will make replicas as good as the originals and sell them en masse for a fraction of the price.
And don't rule out collecting replicas--Pritzker has a cast of a theropod skull and Myhrvold has casts of all seven known Archaeopteryx, the missing link between dinosaurs and birds.