The Biosphere Reserve of Sian Kaan, "where the sky is born" in Mayan, was established in 1986 and is now a UNESCO World Heritage Site Sian Ka’an faces the greatest challenge of conservation: To find a way to integrate human activities without compromising other forms of life contained within its boundaries.

The reserve is approximately 1.3 million acres in size and spans 120 kilometers from north to south - comprising almost one third of the Caribbean coast of Mexico. Sian Ka’an is home to 103 known mammal species, 336 known bird species and an important nesting site of two endangered sea turtle species. It contains three large core zones where human activity is limited by permission to scientific research. Low-impact human activities and sustainable development occur in the area of the reserve known as the buffer zone.

The human population is estimated at 2,000 inhabitants, the majority of which are located in the coastal regions, especially in the fishing villages of Punta Allen and Punta Herrero. Casa Nalum is set within 2.5 acres of private land inside the Biosphere Reserve of Sian Ka’an. Completely immersed in nature, it has the Caribbean Sea at the front and the lagoon at the back through which you have access to ancient Mayan canals and ruins The house has many open areas where you can relax, read a book or sun-bathe.

The roof terrace has exceptional views of both the sea and the lagoon, in which the sun sets, while on the white sandy beach the transparent water constantly invites you to jump in and enjoy The living area is at the centre of the house with a large sofa where you can play table games, watch films on a 120inch cinema screen, listen to music, or just enjoy the views of the sea