Boat Tour in The Osa Peninsula Found: 2 | Change Filter Options Corcovado Trek and Overnight in Sirena Ranger Station Explore the lush trails of Costa Rica's Corcovado National Park and stay overnight at the Sirena Ranger Station. Enjoy a rainforest adventure with expert guides and witness the wild beauty of the Osa Peninsula. Corcovado National Park and Drake Bay Wilderness Adventure Experience the stunning beauty of Corcovado National Park and Drake Bay Wilderness. Enjoy guided hikes, witness the extensive biodiversity and relax in the natural pools and waterfalls.