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Katosa Tours welcomes you to the Osa Peninsula

The Osa Peninsula:
Costa Rica’s Last Wild Frontier

Nestled in the far south of Costa Rica, the Osa Peninsula is one of the most biologically intense places on the planet—a rare jewel where untamed rainforest meets pristine coastline. From the vast wilderness of Corcovado National Park to the lush corridors of Piedras Blancas, and the vibrant waters of the Golfo Dulce, this region offers a truly immersive experience in nature.

Home to jaguars, tapirs, sloths, monkeys, macaws, and over 700 species of trees, the Osa is bursting with life at every turn. Wildlife refuges like the Osa Wildlife Refuge and the Gulfo Dulce Forest Reserve create essential migration corridors for countless species, while the calm, nutrient-rich waters of the Golfo Dulce host dolphins, sea turtles, and even seasonal visits from humpback whales.

Whether you’re trekking through primary rainforest, kayaking through mangroves, or snorkeling over coral reefs, the Osa Peninsula offers a level of biodiversity and ecological intimacy found in very few places on Earth. Each area—from the dense trails of Corcovado to the quiet shores of Playa Blanca—offers its own unique rhythm, making the peninsula a haven for hikers, birdwatchers, photographers, and those simply seeking reconnection with the wild.

Recommended Tours 

Explore a pristine tropical gulf, surrounded by lush rainforests and expansive mangrove wetlands…

Get the full Corcovado experience on this 2-day tour adventure through jungles and rivers…

Lead by a local Costa Rican family, on this tour you can uncover the historical use of medicinal plants…

Meet Your Guide

Katosa Tours is owned and operated by Alejandra, a certified tour guide and Puerto Jimenez local. She started Katosa because of her love of the natural world, and her desire to share that love with the curious minds that visit the Osa Peninsula. With years of experience leading tours and conservation efforts, she is an expert naturalist with a passion for education and maintaining the natural wonders Costa Rica.

Ask her where to find the best bike routes on the peninsula!