Architecture As An Ecosystem. An appropriation strategy for the Middle Magdalena in the humid Colombian tropic. Part 2 Project 2001 Andres AbadFelipe VillaMargarita Paz National University of Colombia-Medellin Medellin Colombia The wars among the state, the guerrilla and the drug traffickers, generated condemned territories in our country (confiscated government' possession). The project seeks to take advantage of these lands in order to implement appropriation models, where environmental, architectural and technological aspects are taking into consideration.The proposal outlines an appropriation strategy that has as a starting point the relationship between natural resources and man, with the purpose of reaching a sustainable development of the area. In order to carry out this project a methodological model proposal will be laid out (which includes laboratory design and experimentation software) where architecture acquires quantitative tools that can give more security when making decisions in the process of architectural design. Study of technological aspects related to bio-climatic factors stated throughout the architectural project, is reflected in the answers given where comfort, energy saving, recovery and caring of natural resources are the most important thing. Andres AbadFelipe VillaMargarita Paz This work overpasses the challenges of the role of architecture, offering a new level of balance inside our country conditions. It takes a step forward in the strategy because of the way of asking the questions from architectural fields to propose possible solutions to the situation of our country, finding alternatives for sustainable and feasible settlements in places of low productivity with extensive cattle farming for people displaced from their original territories.It has become an interdisciplinary project, leaded by its authors during a rigorous process, and has given solution to the questions it asked, giving account of a multidisciplinary dialogue with a clear architectural project criteria. It uses outstanding methods and know how to solve a problem of architecture with its instruments and documents, making it a project of architecture as research inside and outside the architect´s discipline, concluding in an architectural depiction of the dense and deep thoughts that support it, and finally simulating its possible materialization.