Portal:United States/Anniversaries/August/August 25
- War of 1812: On the second day of the Burning of Washington, British troops torch the Library of Congress, United States Treasury, Department of War, and other public buildings.
- 1823 – American fur trapper Hugh Glass is mauled by a grizzly bear while on an expedition in South Dakota.
- 1835 – The first Great Moon Hoax article is published in The New York Sun, announcing the discovery of life and civilization on the Moon.
- 1916 – The United States National Park Service is created.
- 1948 – The House Un-American Activities Committee holds first-ever televised congressional hearing: "Confrontation Day" between Whittaker Chambers and Alger Hiss.
- 2017 – Hurricane Harvey makes landfall in Texas as a powerful Category 4 hurricane, the strongest hurricane to make landfall in the United States since 2004. Over the next few days, the storm causes catastrophic flooding throughout much of eastern Texas, killing 106 people and causing $125 billion in damage.