Ten years after September 11, 2011, images of the deadliest attacks ever launched on American soil have lost none of their power to stun, appall, enrage, and devastate. The United States had experienced nothing like it since Pearl Harbor, and even that assault did not share the profoundly sinister air of having been aimed — clearly, murderously — at civilians.
To mark and perhaps, in a small way, lend coherence to our remembrance, LIFE.com curated this collection of 911 photographs. And so here they are: images you remember; images forgotten, or never seen; moments great and small from New York, Washington, and cities around the world as the scale of the cataclysm grew unspeakably clear. This is 9/11 — 911 Photographs of 9/11