The project its embraced by the program of regeneration inside the Central Park of Mazatlan complex. The intention is to complement the public, natural and cultural area of the complex.The idea of this project is to offer the complete experience of the oceans and shore ecosystems of the Sea of Cortes.The building that is proposed it´s a place were sea and terrestrial nature are encountered with the architecture and humans world. Such as the interior and exterior of the building nature lives and grows, giv ing identity to the project, belonging to the place, and converting the experience into to something complete and unique.A detonation to the space it´s to plant an orthogonal, rational, func tional and flexible structure, that has identity to the place were its located. Resolves in a unitary and simultaneity way the spaces, struc ture, surroundings, installations and integration to the context. Above the orthogonal order defined by the structural grid are raised program, functional and service walls, that are extended to the context in no regular way to integrate with the surrounding landscape and provides structural stability to the building. The project search to increase the contact space between interior and exterior, blurring the limits, and leading a bigger interaction.The intention of the project its to immerse the visitant in a natural world through the way of the exterior public space to the top of the building, so later they could descend to the main entrance plaza were the visitants starts the way to the exhibition. From this plaza we will access each one of the ecosystems of the exhibition; open sea, shores, land and woods, in addition to the educational programs, like the auditorium and public laboratories. The exhibition could be stared by any ecosystem. But also the visitant could follow the exhibition in a continuous but flexible way, because of the sequence of spaces that communicates in a continuous way the programs, but also with the external natural environment.The project is developed in three levels. The first one, at ground floor, locates the administration and staff, reception of scholar groups, part of the public services, a big part of the conservation and support of sea life, and general centralized installations. The second floor, place the main entrance plaza, exhibitions and public services. Above some parts of this level, its located the support and attention area to the big tanks, with complementary programs of dressing rooms, bathrooms, equipment for the personal and diving in to the oceanic tank visitants. Also in this floor are located the installation and remaining equipment for sea life support.