USA TODAY

To celebrate the National Park Service's 100th anniversary this August, USA TODAY will be highlighting one national park per week in a countdown to the centennial on August 25th. From the geysers of Yellowstone National Park, to the scenic beauty of Mount Rainier National Park, to the harsh desert environment of Death Valley National Park, we now move to the Pacific Northwest's rugged coastline, imposing mountains and sprawling forests in Olympic National Park. Almost one million acres of pristine wilderness await visitors, and with three distinct ecosystems, the park has something for everyone. Explore Olympic through videos, photo galleries, and more all week.

Olympic National Park: 10 things not to miss in the park

Olympic National Park: Disconnect from the world

Behold, beware the raw beauty of Olympic National Park: