Would you like to take a stroll through La Colonia's oldest and most popular public park? If so, come to the botanical garden, which is located in Riehl, an area north of La Cologne near the left bank of the Rhine. The botanical garden covers an area of about 11.5 hectares. It was founded in the nineteenth century and is visited by more than a million people every year. It includes hundreds of varieties of plants and trees obtained from all over the world.