National Parks I have been to.
State National 

Parks

 National

Monuments

 National 

Historic Parks

 National 

Recreation Areas

 National 

Battle Field Parks
Alabama   Little River Canyon National Preserve      
Arizona Saguaro Montezuma Castle   Lake Mead  
  Grand Canyon Oregon Pipe      
  Petrified Forest        
California Death Valley Lava Beds   Smith River  
  Joshua Tree Muir Woods   Whiskeytown  
  Kings Canyon Mohave National Preserve   Point Reyes  
  Lassen Volcanic Cabrillo National Monument   Golden Gate  
  Redwood     San Diego Beaches  
  Sequoia        
  Yosemite        
Colorado Black Canyon of the Gunnison Dinosaur      
  Mesa Verde        
  Rocky Mountain        
Florida Big Cypress        
  Everglades        
Hawaii Hawaii Volcanoes   Pu'uhonua o Honaunau National Historical Park
    
      USS Arizona Memorial    
Idaho   Craters of the Moon Nez Perce NHP Hells Canyon    
        Sawtooth  
Indiana       Indiana Dunes  
Kentucky Mammoth Cave        
Maryland         Antietam National Battlefield
Michigan       Sleeping Bear  
        
Pictured Rocks
  
Montana Glacier        
Nevada Great Basin Lehman Caves   
 Lake Mead
 
        
 Red Rock Canyon
 
        Spring Mountains   
New Jersey          
New Mexico Carlsbad Caverns White Sands National Monument   Delaware Water Gap  
North Carolina Great Smoky Mountains        
North Dakota Theodore Roosevelt        
Oregon Crater Lake John Day Fossil Beds   Diamond Craters  
    Oregon Caves   Hells Canyon    
        Columbia River Gorge NSA  
Pennsylvania       Delaware Water Gap  
South Dakota Badlands Jewel Cave      
  Wind Cave Mount Rushmore National Memorial      
Tennessee Great Smoky Mountains        
Texas Guadalupe Mountains        
Utah Bryce Canyon Grand Staircase - Escalante NM Flaming Gorge    
  Capitol Reef Cedar Breaks      
  Zion Dinosaur      
  Arches        
  Canyon Lands        
West Virginia     Harpers Ferry  New River Gorge  
Virginia Shenandoah        
Washington Mount Rainier Mount St Helens   Lake Roosevelt    
  Olympic     Ross Lake NRA (Diablo Lake)  
  Northern Cascades        
Wyoming Grand Teton Devils Tower NM      
  Yellowstone         
 
    NRA = National Recreation Area
    NL = National Lakeshore
    NRRA = National River & Recreation Area
    NR = National River
    NS = National Seashore
    NSA = National Scenic Area
    RA = Recreation Area