Haystacks is the common English title for a series of impressionist paintings by Claude Monet. The principal subject of each painting in the series is stacks of harvested wheat. The title refers primarily to a twenty-five canvas series which Monet began near the end of the summer of 1890 and continued through the following spring, though Monet also produced five earlier paintings using this same stack subject. A precursor to the series is the 1884 Haystack Near Giverny.

Water Lilies is a series of approximately 250 oil paintings by French Impressionist Claude Monet (1840–1926). The paintings depict his flower garden at his home in Giverny, and were the main focus of his artistic production during the last thirty years of his life. Many of the works were painted while Monet suffered from cataracts.