Hudson River school

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A group of American landscape painters active from about 1825 to 1875 whose works, influenced by European Romanticism, depict the beauty and grandeur of areas such as the Hudson River Valley, the Catskill Mountains, and Niagara Falls.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun the first coherent school of American art; active from 1825 to 1870; painted wilderness landscapes of the Hudson River valley and surrounding New England