Fort Griffin, Texas became infamous in its brief run. Founded in the Panhandle in 1867, the place was a magnet for folks like Doc Holliday, Wyatt Earp, Big Nose Kate, John Selman, John Wesley Hardin, and too many more to list. Outlaw/lawman John Larn was marshal, sometimes keeping a lid on things.
But by 1881, a nearby town had attracted a railroad and more civilized crowd. Fort Griffin slowly dwindled away to a ghost town by the 1940s.