⏱️ 7 min read
The United States is home to an impressive collection of national monuments that preserve some of the country’s most significant natural wonders, historical sites, and cultural treasures. While many people are familiar with famous national parks, national monuments often fly under the radar despite their remarkable features and fascinating histories. These protected areas tell compelling stories about America’s past, showcase extraordinary geological formations, and safeguard irreplaceable ecosystems. Here are twelve surprising facts that reveal the unique nature of these special places.
Understanding America’s Protected Landmarks
1. Presidents Have Monument-Making Powers
Unlike national parks, which must be established by an act of Congress, national monuments can be designated by presidential proclamation under the Antiquities Act of 1906. This law grants the President authority to protect significant natural, cultural, or scientific features on federal lands. President Theodore Roosevelt was the first to use this power, designating Devil’s Tower in Wyoming as the nation’s first national monument. Since then, 16 presidents have used the Antiquities Act to protect over 150 sites, making it one of the most important conservation tools in American history.
2. The Grand Canyon Started as a Monument
Many of today’s most beloved national parks began their protected status as national monuments. The Grand Canyon, now one of the world’s most recognizable natural wonders, was first designated a national monument by President Theodore Roosevelt in 1908 before Congress elevated it to national park status in 1919. Other parks that followed this path include Acadia, Olympic, Grand Teton, and Death Valley. This two-step process often allowed for quicker protection of threatened areas while more permanent legislative protection was being arranged.
3. Some Monuments Are Larger Than States
While many people assume national monuments are small historical sites, some encompass vast areas. The Papahānaumokuākea Marine National Monument in Hawaii is the largest conservation area in the United States, covering approximately 583,000 square miles of ocean—larger than all the country’s national parks combined. On land, the Bears Ears National Monument in Utah spans 1.36 million acres, while the Grand Staircase-Escalante National Monument covers nearly 1.9 million acres, making it larger than the state of Delaware.
4. Underwater Treasures Receive Protection Too
National monuments aren’t limited to terrestrial environments. Several marine national monuments protect underwater ecosystems, coral reefs, and maritime heritage sites. The National Marine Sanctuaries system and marine monuments like the Marianas Trench Marine National Monument safeguard some of the deepest ocean environments on Earth, including the Mariana Trench’s Challenger Deep, the lowest point on the planet at nearly 36,000 feet below sea level. These aquatic monuments protect diverse marine life, from whales and sea turtles to rare deep-sea creatures.
5. Ancient Dwellings Preserved for Centuries
Several national monuments protect remarkable archaeological sites showcasing ancient human habitation. The Gila Cliff Dwellings National Monument in New Mexico preserves homes built by the Mogollon people in natural caves around 1280 AD. Similarly, Montezuma Castle National Monument in Arizona features well-preserved cliff dwellings that are nearly 1,000 years old. These sites provide invaluable insights into the sophisticated building techniques and daily lives of prehistoric communities that thrived in North America long before European contact.
6. Monuments Can Be Controversial
The designation of national monuments has sometimes sparked significant political and legal debates. Local communities, state governments, and various interest groups have occasionally opposed monument designations, particularly when they affect land use, resource extraction, or local economies. Several presidents have reduced the boundaries of existing monuments, most notably in 2017 when Bears Ears and Grand Staircase-Escalante were substantially reduced, though these decisions remain subject to legal challenges and subsequent administrations have restored or modified boundaries.
7. Protecting American Innovation and Industry
Not all monuments preserve natural landscapes or ancient history—some celebrate American innovation and industrial heritage. The Thomas Edison National Historical Park in New Jersey protects the laboratory and home of one of America’s greatest inventors. The Pullman National Monument in Illinois preserves the first model industrial town in the United States. The Tule Springs Fossil Beds National Monument in Nevada showcases Ice Age paleontological resources, helping scientists understand prehistoric megafauna that once roamed North America.
8. Civil Rights History Preserved
Recent monument designations have increasingly focused on protecting sites significant to civil rights and social justice movements. The Stonewall National Monument in New York honors the birthplace of the modern LGBTQ+ rights movement. The Birmingham Civil Rights National Monument in Alabama preserves locations central to the 1963 civil rights demonstrations. The Reconstruction Era National Historical Park in South Carolina tells the story of this critical period following the Civil War. These designations reflect an evolving understanding of which stories deserve federal protection and recognition.
9. Indigenous Voices Shape Monument Creation
Modern monument designations increasingly incorporate Native American consultation and traditional knowledge. Bears Ears National Monument was proposed by a coalition of five tribes with ancestral connections to the area. Many monuments now feature co-management arrangements where tribal nations participate in protecting culturally significant landscapes. This represents a significant shift toward recognizing indigenous peoples’ deep connections to lands they’ve stewarded for millennia and acknowledging that conservation is most effective when it incorporates traditional ecological knowledge.
10. Monuments Exist in Urban Settings
While many imagine national monuments as remote wilderness areas, numerous monuments exist within or near major cities. The African Burial Ground National Monument occupies less than an acre in lower Manhattan, commemorating the largest colonial-era cemetery for free and enslaved Africans. The Statue of Liberty National Monument sits in New York Harbor, welcoming millions of visitors annually. These urban monuments make protected sites accessible to people who might never visit remote wilderness areas, democratizing access to America’s heritage.
11. Scientific Research Opportunities Abound
National monuments serve as living laboratories for scientific research across multiple disciplines. The Craters of the Moon National Monument in Idaho provides insights into volcanic geology, while Fossil Butte National Monument in Wyoming yields exceptionally well-preserved fossils from an ancient lake ecosystem. Researchers studying climate change, ecosystem dynamics, archaeology, and geology rely on the protected environments within monuments to conduct long-term studies without the interference of development or resource extraction. This scientific value often proves as important as the recreational or cultural significance.
12. Economic Benefits to Local Communities
Despite occasional concerns about restrictions on land use, studies consistently show that national monuments generate significant economic benefits for nearby communities. Visitor spending at monuments supports local businesses, from hotels and restaurants to outdoor outfitters and tour companies. A 2017 study found that national monuments contribute billions of dollars annually to local economies and support thousands of jobs. Areas near monuments often experience population growth and economic diversification as people seek to live near protected public lands, while property values typically increase rather than decrease following monument designation.
Preserving America’s Heritage for Future Generations
These twelve facts reveal that national monuments represent far more than scenic landscapes or historical markers—they embody America’s commitment to preserving its natural wonders, cultural heritage, and diverse stories for future generations. From presidential powers to underwater protection, from ancient cliff dwellings to civil rights landmarks, these monuments reflect the full spectrum of what makes America unique. Whether protecting vast marine ecosystems, commemorating struggles for equality, or safeguarding scientific treasures, national monuments continue to evolve as society recognizes new stories worth preserving. As awareness grows about their importance, these protected areas will undoubtedly continue serving as touchstones connecting Americans to their shared natural and cultural inheritance, ensuring that the most significant chapters of the nation’s story remain accessible and protected for centuries to come.