Top 10: Park passion

The National Park Service celebrates its centennial this year with special events at parks across the nation. About 70 million outdoors enthusiasts visited a national park in 2014, and 2015 figures will be out later this year. Meanwhile, has composed a Top 10 list of the country's most popular parks, from the Great Smoky Mountains (more than 10 million visitors) to Glacier National Park (2.3 million).

1 Great Smoky Mountains, North Carolina and Tennessee

2 Grand Canyon, Arizona

3 Yosemite, California

4 Yellowstone, Wyoming, Idaho and Montana

5 Rocky Mountain, Colorado

6 Olympic, Washington

7 Zion, Utah

8 Grand Teton, Wyoming

9 Acadia, Maine

10 Glacier, Montana

-- Jackie Burrell, Staff