Question

it is the most beautiful river in the world​

Answer 1

☆ANSWER

Dubbed the “River of Five Colours”, Colombia's Caño Cristales is reckoned to be the most beautiful river in the world.

$\huge\bold\red{@MissTranquillity}$

Answer 2

The most beautiful river in the world is 2 Caño Cristales.
2 Caño Cristales is a Colombian river located in the Serrania de la Macarena province of Meta. It The river is commonly called the "River of Five Colors" or the "Liquid Rainbow", and is regarded as the most beautiful river in the world due to its striking colors.