A mall that has 3 separate buildings - Buenavista 1, 2 and Mallplaza. They are all connected through the inside of the mall. You're bound to find anything you need here, including some delicious restaurants in the food hall at Mallplaza.
Barranquilla has many awesome cultural spots to check out, if you'd like to explore a bit of the city we recommend doing some research on a tour that would best suit your needs!