The Rosario Archipelago is a group of islands in the Caribbean Sea about an hour off the coast of Cartagena.
My suggestion
If the Tayrona National Park is on your itinery, I suggest you cross this frustrating and touristy place off your list. The beaches at the park are far more beautiful.
Whether it's misty or sunny, you'll love the unusual landscape in the Cocora Valley. The enchanting ambiance and the sheer number of wax palms, a national symbol, are impressive, to say the least!