[ noun ] the position of a prominent or well-known object in a particular landscape
"the church steeple provided a convenient landmark"
Used in print(W. E. B. DuBois, Worlds of Color....)
But it was a landmark .
[ noun ] an event marking a unique or important historical change of course or one on which important developments depend
"the agreement was a watershed in the history of both nations"
Used in print(Musical America, LXXXI:5...)
His various aesthetic postulates remain as landmarks of a_house_divided_against_itself : Supra_Expressionism , Neo Paganism , Neo_Classicism , Neo_Romanticism , Neo_Jazz , Neo Ecclesiasticism , Neo Popularism , and most_recently , Post Serialism - all competing with each other within one composer !