While this understated garden has more than 4,500 flowers and 139 species of birds, the most impressive part is The Orchideorama. It’s a hexagonal steel arch that looks like a giant beehive and collects water that is redistributed to the orchid gardens below. Be sure to visit the butterfly house too, or the cute café in the middle of the gardens, made from an old railway carriage. The annual Feria de las Flores flower festival in Medellín in August, where the botanical gardens put on a bloomin’ impressive exhibition of flowery crafts.