Explain simply why in the old Rockland Children 's Psychiatric Center in Rockland County , New York is the correct answer to: Passage: The series is set in a fictional prison in Litchfield, New York, which is a real town in upstate New York, but it does not have a federal penitentiary. The series began filming in the old Rockland Children's Psychiatric Center in Rockland County, New York, on March 7, 2013. The title sequence features photos of real former female prisoners including Kerman herself.

Question: Based on this passage, where does orange is the new black film?. Explanation:
The important part for answering this question is: The series began filming in the old Rockland Children's Psychiatric Center in Rockland County, New York, on March 7, 2013.