MD Atiqur Rahman on Instagram: "“From rainbow waters to ancient flows — the world’s most beautiful rivers carry the stories of nature, time, and wonder.” 1. Caño Cristales (Colombia) – Often called “The River of Five Colors” because of its striking red, yellow, green, blue, and black hues caused by aquatic plants and minerals.2. Li River (China) – Famous for its surreal karst mountain scenery, misty mornings, and tranquil waters — looks like a living Chinese ink painting.3. Zambezi River (Africa