The United States commemorates 25 years since the September 11 attacks with tributes, silences, and vigils.

The United States is observing the 25th anniversary of the September 11, 2001, terrorist attacks carried out by Al Qaeda. Commemorations across the country include tributes, moments of silence, and vigils to honor the nearly 3,000 victims who died when attackers targeted symbols of American political, military, and economic power in New York and Washington.

Twenty-five years after the events, the attacks remain a defining moment in the nation's history. Public perception reflects the enduring impact of the tragedy, with half of the American adult population identifying the day as one of the most significant events in the country's modern history.