People enjoy Giant Ferris Wheel in Vienna's Prater amusement park

Photo taken on March 24, 2019 shows a model of Giant Ferris Wheel in the Prater amusement park in Vienna, Austria. Prater amusement park's most famous piece is the century-old Giant Ferris Wheel, or Riesenrad, which was constructed in 1897 and is still operating today. (Xinhua/Guo Chen)