The term identifies premier protected natural areas located along the eastern seaboard of the United States, designated for their significant ecological, historical, or recreational value. Examples include Acadia National Park in Maine, known for its rugged coastline, and Shenandoah National Park in Virginia, celebrated for its scenic Skyline Drive and hiking trails.
These areas provide vital habitats for diverse flora and fauna, offering opportunities for scientific research and conservation efforts. They also represent culturally significant landscapes, preserving historical sites and offering insights into past human interactions with the environment. Furthermore, they contribute significantly to regional economies through tourism and recreation.