Climb El Peñón de Guatapé There are 740 steps to the uppermost step atop the building at the summit, a fact reinforced by yellow numbers also seen in the climb up the stairs. A viewing spot was built on top of the rock, where it is possible to acquire handicrafts, postcards, and other local goods.
Spend a few days in the beautiful Cartagena, only an hour and thirty minutes flight away from Medellin airport. "Cartagena is a port city on Colombia’s Caribbean coast. By the sea is the walled Old Town, founded in the 16th century, with squares, cobblestone streets and colorful colonial buildings. With a tropical climate, the city is also a popular beach destination. Reachable by boat are Isla de Barú, with white-sand beaches and palm trees, and the Islas del Rosario, known for their coral reefs." Wiki.