15 things we learned about the making of 'Fantastic Beasts and Where to Find Them'

This post includes spoilers for 'Fantastic Beasts and Where to Find Them'

A lot of hard, No-Maj work went into making the magical world of "Fantastic Beasts and Where to Find Them." J.K. Rowling's universe was transported to 1926 New York, and the filmmakers had to make period-accurate sets and make sure even the smallest of details was consistent with the rest of the "Harry Potter" franchise.

HarperCollins published three books that go behind the scenes of how the movie was made, and they're chock full of interesting details. They include "The Case of Beasts: Explore the Film Wizardry of Fantastic Beasts and Where to Find Them" by Mark Salisbury, "Inside the Magic: The Making of Fantastic Beasts and Where to Find Them " by Ian Nathan, and "The Art of the Film: Fantastic Beasts and Where to Find Them" by Dermot Power, who was one of the movie's conceptual artists.

We read all of them. Here are some of the most interesting things we learned.