There are 423 units under the National Park Service umbrella. Monuments, Historic Sites, Parks & Historic Parks make up over half of the units.
Here's a link with the units listed by state. List of the United States National Park System official units - Wikipedia
Here's my list so far:
Denali National Preserve
Kenai Fjords National Park
Coronado National Memorial
Glen Canyon National Recreation Area
Grand Canyon National Park
Petrified Forest National Park
Sunset Crater Volcano National Monument
Walnut Canyon National Monument
Wupatki National Monument
Fort Smith National Historic Site
Hot Springs National Park
President William Jefferson Clinton Birthplace Home National Historic Site
Cabrillo National Monument
Castillo de San Marcos National Monument
Everglades National Park
Pearl Harbor National Memorial
Acadia National Park
Appalachian National Scenic Trail
Catoctin Mountain Park
Chesapeake and Ohio Canal National Historical Park
Fort McHenry National Monument and Historic Shrine
Boston National Historical Park
Vicksburg National Military Park
Gateway Arch National Park
Lake Mead National Recreation Area
Delaware Water Gap National Recreation Area
Paterson Great Falls National Historical Park
Thomas Edison National Historical Park
White Sands National Park
Gateway National Recreation Area
Statue of Liberty National Monument
Blue Ridge Parkway
Gettysburg National Military Park
Independence National Historical Park
Fort Sumter and Fort Moultrie National Historical Park
Badlands National Park
Mount Rushmore National Memorial
Great Smoky Mountains National Park
Padre Island National Seashore
George Washington Memorial Parkway
Shenandoah National Park
Wolf Trap National Park for the Performing Arts
Korean War Veterans Memorial
Lincoln Memorial
Martin Luther King, Jr. Memorial
National Capital Parks
National Mall
Pennsylvania Avenue National Historic Site
Rock Creek Park
Thomas Jefferson Memorial
Vietnam Veterans Memorial
Washington Monument
White House and President's Park
World War II Memorial
Harpers Ferry National Historical Park
New River Gorge National Park and Preserve
Devils Tower National Monument
Grand Teton National Park
John D. Rockefeller Memorial Parkway
Yellowstone National Park
Living close to Washington, DC makes it easy to knock a few out in a day. I thought Glen Echo park in Maryland was under the guidance of the NPS. It doesn't appear so.
Here's a link with the units listed by state. List of the United States National Park System official units - Wikipedia
Here's my list so far:
Denali National Preserve
Kenai Fjords National Park
Coronado National Memorial
Glen Canyon National Recreation Area
Grand Canyon National Park
Petrified Forest National Park
Sunset Crater Volcano National Monument
Walnut Canyon National Monument
Wupatki National Monument
Fort Smith National Historic Site
Hot Springs National Park
President William Jefferson Clinton Birthplace Home National Historic Site
Cabrillo National Monument
Castillo de San Marcos National Monument
Everglades National Park
Pearl Harbor National Memorial
Acadia National Park
Appalachian National Scenic Trail
Catoctin Mountain Park
Chesapeake and Ohio Canal National Historical Park
Fort McHenry National Monument and Historic Shrine
Boston National Historical Park
Vicksburg National Military Park
Gateway Arch National Park
Lake Mead National Recreation Area
Delaware Water Gap National Recreation Area
Paterson Great Falls National Historical Park
Thomas Edison National Historical Park
White Sands National Park
Gateway National Recreation Area
Statue of Liberty National Monument
Blue Ridge Parkway
Gettysburg National Military Park
Independence National Historical Park
Fort Sumter and Fort Moultrie National Historical Park
Badlands National Park
Mount Rushmore National Memorial
Great Smoky Mountains National Park
Padre Island National Seashore
George Washington Memorial Parkway
Shenandoah National Park
Wolf Trap National Park for the Performing Arts
Korean War Veterans Memorial
Lincoln Memorial
Martin Luther King, Jr. Memorial
National Capital Parks
National Mall
Pennsylvania Avenue National Historic Site
Rock Creek Park
Thomas Jefferson Memorial
Vietnam Veterans Memorial
Washington Monument
White House and President's Park
World War II Memorial
Harpers Ferry National Historical Park
New River Gorge National Park and Preserve
Devils Tower National Monument
Grand Teton National Park
John D. Rockefeller Memorial Parkway
Yellowstone National Park
Living close to Washington, DC makes it easy to knock a few out in a day. I thought Glen Echo park in Maryland was under the guidance of the NPS. It doesn't appear so.