Acadia National Park's Bass Harbor Head Light stars as the first of 16 Forever stamps celebrating the National Park Service's 100th anniversary. The special stamps will be issued June 2 at the once-per-decade World Stamp Show in New York. Click through the gallery to view the rest of the stamps.
Delicate Arch is one of more than 2,000 stone arches in Arches National Park near Moab, Utah. The park, which hosts the greatest density of natural arches in the world, has hundreds of soaring pinnacles, thousands of natural stone arches and giant, balanced rocks.
Bands of wild horses are the main attraction at Maryland's and Virginia's Assateague Island National Seashore, a barrier island in the states of Maryland and Virginia.
The Pueblo Revival-style visitor center at Frijoles Canyon, part of Bandelier National Monument near Los Alamos, New Mexico, is depicted in a 1930s painting by artist Helmuth Naumer Sr. The center also served as the administration building.
Glacier Bay National Park and Preserve in Alaska protects 3.3 million acres of glaciers, mountains, forests and coastlines. The photograph is by Tom Bean of Flagstaff, Arizona.
The Grand Canyon is 277 river miles long, up to 18 miles wide and one mile deep in parts. The image on the stamp is a detail of a chromolithograph-on-canvas, "The Grand Canyon of Arizona, from Hermit Rim Road," by artist Thomas Moran (1837--1926).
Gulf Islands National Seashore, Florida/Mississippi —
John Funderburk's photograph of a long-legged water bird with a wingspan that can exceed 6 feet is the stamp image for Gulf Islands National Seashore, which is in Florida and Mississippi.
The late afternoon sun shining into a rainstorm created these rainbows over the crater at Haleakalā National Park on the Hawaiian island of Maui. Photographer Kevin Ebi, who lives near Seattle, took the picture.
Kenilworth Park & Aquatic Gardens, Washington, D.C. —
A water lily with a bloom the size of a basketball at Kenilworth Park & Aquatic Gardens in Washington, D.C. was photographed by Cindy Dyer of Alexandria, Virginia.
Marsh-Billings-Rockefeller National Historical Park —
A detail of an iconic Hudson River School of Art landscape painting of another national park, "Scenery in the Grand Tetons," celebrates Marsh-Billings-Rockefeller National Historical Park. The Albert Bierstadt painting was part of the Conservation Movement that helped create the national parks system. It hangs in Laurence Rockefeller's study in the Marsh-Billings-Rockefeller Mansion.
Albert Bierstadt/Marsh-Billings-Rockefeller National Historical Park
Mount Rainier National Park, Washington —
A star trail photograph comprised from 200 images is the creation of Matt Dieterich of Pittsburgh, who worked at Mount Rainier as an intern with the National Park Service Geoscientist-in-the-Parks program.
San Francisco Maritime National Historical Park, California —
The square-rigger Balclutha is the star of the stamp featuring San Francisco Maritime National Historical Park near Fisherman's Wharf. The three-masted sailing ship is part of the park's historic ship collection. To the right is the 1907 steam tugboat Hercules.
Balclutha/San Francisco Maritime National Historical Park
Theodore Roosevelt National Park, North Dakota —
A photograph of the Little Missouri River winding through the Badlands of North Dakota's Theodore Roosevelt National Park was taken in July 2013 by Q.T. Luong of San Jose, California. He's on a 20-year project to photograph all 59 national parks.
This photo of bison silhouetted in Yellowstone National Park's winter morning sun was shot by Art Wolfe of Seattle, who described it as "perfectly backlit bison standing on a small rise in Yellowstone's Lamar Valley."
