Thomas Moran (American, b. England, 1837–1926) The Grand Canyon of the Yellowstone (detail), 1893–1901.
Moran’s watercolors and paintings were instrumental in convincing Congress to establish Yellowstone as the first national park of the United States in 1872. Reproduced here as a 1,000-piece puzzle, it may be turn out to be one of your grandest puzzling accomplishments.

Box size: 13 x 10 x 1.875 in.
Puzzle size: 29 x 20 in.