The Sun Coast office oversees unique national park units that contain vast numbers of tropical marine and terrestrial treasures. These parks form the backbone of the Sun Coast's tourist economy, and play critical roles in storing and filtering water and providing breeding and nursery areas for a huge array of wildlife.

The Southwest office, covering Arizona, Colorado, New Mexico, and Utah, includes an astounding wealth of 73 National Parks, Monuments, Historic Sites and Trails. This vast region is a tribute to nature’s ability to sculpt the desert landscape: rivers, caves, canyons, and dunes are some of the dazzling features in our parks. From the majesty of Rocky Mountain National Park to the ancient ruins of Chaco Canyon, the Southwest Region offers countless opportunities to hike, raft, explore and contemplate.

The southeast region is unique, encompassing the southeastern shorelines, the southern highlands, and all the diverse parks in-between. In addition to natural resources like Mammoth Cave and the Great Smoky Mountains, the southeast region boasts significant cultural heritage sites such as the Chickamauga & Chattanooga National Military Park, the Tuskegee Airmen National Historic Site, and the Horseshoe Bend National Military Park.

NPCA's Yellowstone Program is leading efforts to protect our nation's first national park. We are working to: safeguard the park in the winter through moving to a snowcoach only transportation system; protect Yellowstone’s bison by expanding access to critical habitat outside the park; improve and restore habitat for Yellowstone’s pronghorn antelope; protect and restore native fisheries; secure additional funding for Yellowstone to make up the $23 million annual gap between what Yellowstone needs to operate and what it actually receives; and decrease and mitigate the impacts of climate change on Yellowstone National Park.

The Northern Rockies Region contains some of America’s most awe-inspiring wilderness and is home to several of the nation’s crown jewel parks. From the Earth’s greatest geyser area found in Yellowstone to the rugged awe-inspiring mountain range found in the Grand Tetons to the history of the Battle of Little Bighorn, America’s rich natural beauty and cultural heritage are at the heart of our national parks.

New York, New Jersey, and New England have almost 40 great national park sites, ranging from the spectacular coastal parks of Acadia, Cape Cod, and Fire Island to the rich historical sites depicting the birth and growth of our nation. NPCA’s work in the Northeast encompasses a growing number of these sites throughout the region.

Outstanding natural beauty, diverse wildlife and ecosystems, and extraordinary history abound in the 70 national parks and many related sites in NPCA’s Mid-Atlantic region. Trace the unfolding American Revolution across the region, from the winter encampment at Valley Forge in Pennsylvania, to Yorktown, Virginia, where the British world turned upside down. Ponder the Civil War’s causes and consequences at Antietam in Maryland, at Gettysburg in Pennsylvania, and at Appomattox Court House in Virginia. Walk in the footsteps of early civil rights leaders at Harpers Ferry in West Virginia. Petition our government, celebrate our diversity, and organize to conquer our challenges on the National Mall in Washington D.C.

Located outside Philadelphia, NPCA’s Pennsylvania field office is dedicated to working with national parks throughout the Commonwealth. In Pennsylvania, NPCA’s efforts include park advocacy, garnering local support for the national parks, and working with community leaders and stakeholders to protect national parks in the state and throughout the system.