Most expensive artworks sold at auction
Van Gogh's 'Portrait of Dr. Gachet': $149.7 million
Van Gogh allegedly said of the homeopathic doctor Dr. Gachet, whom he painted here in 1890, that "he was sicker than I am." The plant is a foxglove, which is used to make the drug digitalis. In 1990, the work was auctioned off to Ryoei Saito, Japan's second-largest paper manufacturer, for $82.5 million, making it the world's priciest painting at the time (the price above has been adjusted).