There’s wild, and then there’s Osa wild. Here at Casa Roja, we find ourselves tucked away in one of the most extraordinary corners of the planet — the Osa Peninsula and its surroundings, where nature still rules the day. Just stepping outside the door feels like crossing into another world, a place where the rhythm of the jungle and the tides guide your experience far away from the noise of modern life.
It’s hard to imagine, but this remote slice of southern Costa Rica is home to about 2.5% of all the biodiversity on Earth. Think about that for a moment. On this small stretch of the Pacific coast, you’ll find the largest expanse of tropical forest left in Central America, wrapped around vast mangrove wetlands and fringed by wild, untouched ocean. Casa Roja sits right at the mouth of the mighty Sierpe River, on the edge of the Terraba-Sierpe National Wetlands, where saltwater and freshwater meet in a tangled jungle of life.
Scientists, photographers, and adventurous souls have been drawn to this place for decades. It’s no surprise — there are 140 species of mammals wandering the forests, more than 400 kinds of birds flashing through the trees, 700 species of trees reaching for the sky, and an incredible 250,000 species in total, many of them still unknown to science. Among them, over 320 are found nowhere else on Earth. It’s no wonder the Osa Peninsula has been a global priority for conservation since the 1970s, with Corcovado National Park at its heart, along with the Golfo Dulce Forest Reserve, Caño Island’s underwater wonders, and countless other protected corners of this wild paradise.
What makes Casa Roja special is that we’re not just visiting this region — we’re living in it, quietly and respectfully. We get to experience the Osa as our backyard, watching scarlet macaws flash across the sky at breakfast, hearing howler monkeys stir at dawn, and sometimes spotting dolphins just offshore. Guests here are invited to step into the flow of this place, whether it’s paddling through the mangroves, spotting caimans at dusk, or simply swinging in a hammock, knowing that few places on Earth remain so alive and untamed.
At Casa Roja, we consider it a privilege to be part of this landscape, not just as hosts but as stewards. The Osa Peninsula isn’t just a destination — it’s an invitation to reconnect with the wild world, to witness nature in full expression, and to understand just how precious and rare this place truly is.
