Imagine white sand, blue water and large rock boulders and you are imagining Parque Nacional Natural Tayrona on Colombia's Caribbean coast.
After about an hour walk from the car park you arrive at Arrecifes, one of the main places to pitch your tent or hang your hammock (which you can rent) in what looks and feels like a bird aviary. Despite the beach being lovely along here, it is not recommended to swim here due to the strong currents. There are even signs telling you that over 100 people have drowned here.
Another half an hour walk along will bring you to La Piscina- aka "The Pool." This is the perfect place to laze your days away with swimming and relaxing on the beach under the shade of a coconut palm. The pool has been created by a sea wall, which protects it from the currents and makes it the best place to swim.
Further along again is Cabo San Juan del Guia, which is another camping spot. Based on recommendations, this traveller hung her hammock at Arrecifes so never made it down as far as Cabo San Juan del Guia. There is a restaurant at Arrecifes but it is a bit pricey (although surprisingly decent quality), so it's recommended that you take your own food and water - particularly water, as it is very hot and humid, so dehydration is a risk. Arrecifes also has toilets and cold showers for you to wash off the layers of sunscreen and salt water. Make sure you take insect repellent as after dark the vicious little things come out in a vengeance.
When walking around Tayrona keep an eye and ear out for some of the local wildlife, including birds and monkeys.