| Genre : | History |
| First air date : | September 27, 2009 |
| Last air date : | October 02, 2009 |
| Diffusion : | Television (PBS) |
| Peter Coyote | Narrator (6 episodes) |
| Tom Hanks | (5 episodes) |
| Philip Bosco | (5 episodes) |
| Murphy Guyer | (5 episodes) |
| Kevin Conway | (5 episodes) |
| Adam Arkin | (4 episodes) |
| Lee Stetson | (4 episodes) |
| Amy Madigan | (4 episodes) |
| Tim Clark | (3 episodes) |
| Derek Jacobi | (3 episodes) |
The six-part documentary explains the history of the U.S. National Parks system, including the initial ideas which led to the world's first national parks and the expansion of the system over 150 years.
| Part | Title | Roles | Details |
| 1 | The Scriptures of Nature : 1851-1890 | Narrator | More information |
| 2 | The Last Refuge : 1890-1915 | Narrator | More information |
| 3 | The Empire of Grandeur : 1915-1919 | Narrator | More information |
| 4 | Going Home : 1920-1933 | Narrator | More information |
| 5 | Great Nature: 1933-1945 | Narrator | More information |
