5 Best Sights in The Osa Peninsula and the South Pacific, Costa Rica

Named for the whales who use this area as a nursery, the park has four separate Blue Flag beaches stretching for about 10 km (6 miles) and encompasses a mangrove estuary, a remnant coral reef, and more than 12,350 acres of ocean, home to tropical fish, dolphins, and humpback whales. Playa Uvita is the most popular sector of the park, with the longest stretch of beach and shallow waters calm enough for kids. Restaurants line the road to the Playa Uvita park entrance, but there are no food concessions within the park. Access to each of the four beaches—from north to south, Uvita, Colonia, Ballena, and Piñuela—is off the Costanera Highway. Although the official park offices are open 7 am to 6 pm, visitors can stay on longer, especially to view sunsets or camp.

This is the last and largest outpost of virgin lowland rain forest in Central America, and it's teeming with wildlife. Visitors who tread softly along the park's trails may glimpse howler, spider, and squirrel monkeys, coatimundis, peccaries (wild pigs), poison dart frogs, scarlet macaws, and, very rarely, jaguars and tapirs.

Most first-time visitors to Corcovado come on a daylong boat tour from Drake Bay or hike in from Carate, Los Patos, or Dos Brazos del Río Tigre. But to get to the most pristine, wildlife-rich areas, you need to walk, and that means a minimum of three days: one day to walk in, one day to walk out, and at least one day inside the park. Park policy requires every visitor to be accompanied by a certified naturalist guide. Whichever guide or tour company you hire can make the park reservation and pay the park entrance fees for you in Puerto Jiménez. All accommodation and food within the park are now provided by a local community consortium called ADI Corcovado ( [email protected]).

The daily limit on the number of overnight visitors at the Sirena station is 70, bunking down in platform tents with all meals and bedding provided. No outside food is allowed.There's also camping ($4) at the San Pedrillo sector, but without meals or bedding. Ranger stations are officially open from 7 am to 4 pm daily, but you can walk in almost any time with a certified guide, as long as you have reserved and paid in advance. For safety reasons, there is no longer any night walking permitted into or out of the park. For more information, see the highlighted listing in this chapter.

This leading ecotourism and conservation wildlife refuge offers spectacular bird-watching tours and excellent naturalist-led hikes (starting at $36), a thrilling Flight of the Toucan canopy tour ($52), a chance to spend the night in the jungle ($158), or self-guided walks along forest and mangrove trails ($15). The refuge also manages a turtle-protection project and nature-education program in the local school. You can stay in basic cabins or in poolside rooms—or just come for the day.

This massive double cascade, the longer one tumbling down 150 feet, is one of the most spectacular sights in Costa Rica. The falls (aka Barú River Falls) are on private property, so the only ways to reach them are on horseback, hiking, or riding in an open truck. Arrive before 1 pm as access to the waterfalls closes at 2 pm.

At the northern end of Ballena Marine National Park, wide, palm-fringed Playa Uvita stretches out along a tombolo (a long swath of sand) connecting a former island to the coast. At low tide, you can walk out to the famous "whale tail," where you'll get magnificent views of the hills and jungles of Uvita (and maybe spot a macaw). This is the most popular beach, especially on weekends, with shallow waters for swimming. On weekdays you may have it almost to yourself. It’s also the launching spot for boat tours and the favorite vantage point for spectacular sunsets. There is no parking at the beach, but there are private parking lots along the road leading to the park entrance, charging $4 a day. Amenities: food and drink; showers; toilets. Best for: sunset; swimming; walking.