National Park System units by type
The 474 pages on this site carry 51 distinct designations in the Park Service's own listing. The 21 listed here each apply to at least three pages and together cover 432 of them. The remaining designations belong to one or two pages apiece and are reached from the park pages.
National Monuments
83 places · most visited: Castle Clinton National Monument
National Historic Sites
78 places · most visited: San Juan National Historic Site
National Historical Parks
64 places · most visited: Chesapeake & Ohio Canal National Historical Park
National Parks
51 units · most visited: Great Smoky Mountains National Park
Park Units
20 units · most visited: Lincoln Memorial
National Historic Trails
18 places · most visited: Ala Kahakai National Historic Trail
National Memorials
17 places · most visited: Mount Rushmore National Memorial
National Recreation Areas
16 units · most visited: Golden Gate National Recreation Area
Parks
11 places · most visited: Rock Creek Park
National Battlefields
11 units · most visited: Petersburg National Battlefield
National Seashores
10 units · most visited: Gulf Islands National Seashore
National Preserves
9 units · most visited: Big Cypress National Preserve
National Military Parks
9 units · most visited: Chickamauga & Chattanooga National Military Park
National Parks & Preserves
8 units · most visited: New River Gorge National Park & Preserve
National Scenic Trails
6 units · most visited: Appalachian National Scenic Trail
Related Areas
5 places · most visited: Alaska Public Lands
National Battlefield Parks
4 units · most visited: Kennesaw Mountain National Battlefield Park
National Monuments & Preserves
3 units · most visited: Craters Of The Moon National Monument & Preserve
National Lakeshores
3 units · most visited: Sleeping Bear Dunes National Lakeshore
Parkways
3 places · most visited: Blue Ridge Parkway
Affiliated Areas
3 places · most visited: Green Springs
Designations are from the NPS API. Data refreshed October 14, 2026.