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People view dahlias at the Holland Dahlia Days at Keukenhof in Lisse, the Netherlands, Aug. 21, 2019. The third Holland Dahlia Days is held from Aug. 21 to 23 at Keukenhof. (Photo by Sylvia Lederer/Xinhua)
People view dahlias at the Holland Dahlia Days at Keukenhof in Lisse, the Netherlands, Aug. 21, 2019. The third Holland Dahlia Days is held from Aug. 21 to 23 at Keukenhof. (Photo by Sylvia Lederer/Xinhua)