After helping Obama pass his landmark health-care reform legislation, Specter was suddenly friendless on the campaign trail.
In July 1925, the town hosted the Scopes Monkey Trial, a landmark case in the history of creationism.
Since it opened in 1984, Indochine has become an iconic New York City landmark.
In other words, this was a very special episode of the show, and a landmark episode of television, in general.
The Supreme Court heard arguments yesterday in a landmark Second Amendment case.
The big white house in which Henry Lee made his home was a landmark in southeast Arizona.
The tree is gone—that old oak tree which was always our landmark!
The Declaration of Independence gave dignity to our Revolutionary contest, and made it a landmark of human progress.
"Yander's Jemmy-Danny-Billy's," they would say, and steer home by that landmark.
Wargrave looked about him and for the first time realised that they were far out in the desert without a landmark to guide them.
Old English landmearc, from land (n.) + mearc (see mark (n.1)). Originally "object set up to mark the boundaries of a kingdom, estate, etc.;" general sense of "conspicuous object in a landscape" is from 1560s. Modern figurative sense of "event, etc., considered a high point in history" is from 1859.