When Paris’s Musée de l’Orangerie reopened earlier this year, it marked “a kind of Second Coming in the art world, 80 years after [Claude] Monet, near the end of his days, donated his supreme achievement to the people of France.” Monet’s Water Lilies series, among the painter’s best-loved works, are again viewable at the museum following a hellish 6-year renovation that “turned into a complicated nightmare involving the subterranean world of Paris.”