River cruises take their time—and that's what makes them great https://on.natgeo.com/2JtEmTw pic.twitter.com/G52zoi5wJw

River cruises take their time—and that's what makes them great https://on.natgeo.com/2JtEmTw  pic.twitter.com/G52zoi5wJw

https://twitter.com/NatGeoTravel/status/1003637181489901568