The National Parks: America's Best Idea is a 2009 television documentary miniseries by director/producer Ken Burns and producer/writer Dayton Duncan which features the United States National Park system and traces the system's history. The series won two 2010 Emmy Awards; one for Outstanding Nonfiction Series and one for Outstanding Writing for Nonfiction Programming in Episode 2 "The Last Refuge". A companion book (ISBN 978-0307268969) was released alongside.