As of 2024, there were 60 National Historical Parks administered by the National Park Service.
The 14 National Historical Parks visited by Gram and Pops are listed in black.
Name
| | Location
|
| Abraham Lincoln Birthplace National Historical Park | | Kentucky |
| Adams National Historical Park | | Massachusetts |
| Appomattox Court House National Historical Park | | Virginia |
| | | |
| Blackstone River Valley National Historical Park | | Rhode Island, Massachusetts |
| Boston National Historical Park | | Massachusetts |
| | | |
| Cane River Creole National Historical Park | | Louisiana |
| Jimmy Carter National Historical Park | | Georgia |
| Cedar Creek and Belle Grove National Historical Park | | Virginia |
| Chaco Culture National Historical Park | | New Mexico |
| Chesapeake and Ohio Canal National Historical Park | | Maryland |
| Colonial National Historical Park (Jamestown, Yorktown) | | Virginia |
| Cumberland Gap National Historical Park | | KY, TN, VA |
| | | |
| Dayton Aviation Heritage National Historical Park | | Ohio |
| | | |
| First State National Historical Park | | Delaware, Pennsylvania |
| Fort Sumter and Fort Moultrie National Historical Park | | South Carolina |
| | | |
| George Rogers Clark National Historical Park | | Indiana |
| Golden Spike National Historical Park | | Utah |
| | | |
| Harpers Ferry National Historical Park | | West Virginia |
| Harriet Tubman National Historical Park | | New York |
| Harriet Tubman Underground Railroad National Historical Park | | Maryland |
| Homestead National Historical Park | | Nebraska |
| Hopewell Culture National Historical Park | | Ohio |
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| Independence National Historical Park | | Pennsylvania |
| | | |
| Jean Lafitte National Historical Park (Chalmette) | | Louisiana |
| | | |
| Kalaupapa Leprosy Settlement and N. H. Park | | Hawaii |
| Kaloko-Honokohau N. H. Park | | Hawaii |
| Keweenaw National Historical Park | | Michigan |
| Klondike Gold Rush National Historical Park | | AK, WA |
| | | |
| Lewis and Clark N. H. Park (Fort Clatsop) | | OR, WA |
| Lowell National Historical Park | | Massachusetts |
| Lyndon B. Johnson National Historical Park | | Texas |
| | | |
| Manhattan Project National Historical Park | | New Mexico, Tennessee, Washington |
| Marsh-Billings-Rockefeller National Historical Park | | Vermont |
| Martin Luther King Jr. National Historical Park | | Georgia |
| Minute Man National Historical Park | | Massachusetts |
| Morristown National Historical Park | | New Jersey |
| | | |
| Natchez National Historical Park | | Mississippi |
| New Bedford Whaling National Historical Park | | Massachusetts |
| New Orleans Jazz National Historical Park | | Louisiana |
| Nez Perce National Historical Park | | ID/MT/OR/WA |
| | | |
| Ocmulgee Mounds National Historical Park | | Georgia |
| | | |
| Palo Alto Battlefield National Historical Park | | Texas |
| Paterson Great Falls National Historical Park | | New Jersey |
| Pecos National Historical Park | | New Mexico |
| Pu'uhonua O Honaunau National Historical Park | | Hawaii |
| | | |
| Reconstruction Era National Historical Park | | South Carolina |
| Rosie the Riveter/World War II Home Front N. H. Park | | California |
| | | |
| Saint-Gaudens National Historical Park | | New Hampshire |
| Salt River Bay National Historical Park and Ecological Preserve | | Virgin Is. |
| San Antonio Missions National Historical Park | | Texas |
| San Francisco Maritime National Historical Park | | California |
| San Juan Island National Historical Park | | Washington |
| Saratoga National Historical Park | | New York |
| Sitka National Historical Park | | Alaska |
| Ste. Genevieve National Historical Park | | Missouri |
| | | |
| Thomas Edison National Historical Park | | New Jersey |
| Tumacácori National Historical Park | | Arizona |
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| Valley Forge National Historical Park | | Pennsylvania |
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| War in the Pacific National Historical Park | | Guam |
| Women's Rights National Historical Park | | New York |