South Pacific Region
The entire south in Costa Rica is relatively undeveloped. No industries, little infrastructure, villages, and lots of nature and jungle. On the Osa Peninsula is the largest contiguous rainforest in Central America, and most of the Corcovado National Park.
We recommend you to plan the visit in advance when visiting this region. The good hotels and posadas have only minor capacities, and the access to the national parks is often limited.