Tayrona National Park is one of the most beautiful places I have seen in all of Colombia. In order to see this beauty you have to trek at least 1 hour in the 100 degree weather with 100% humidity. I walked for roughly 4-5 hours that day and all my clothes were completely drenched.
When you reach the farthest point in Tayrona National Park you are able to go camping and even sleep in a hut on top of the mountain similar to the one above. If you are ever on the coast of Colombia I would highly recommend that you visit. Bring a lot of water!