Madrid needs to reactivate one of its main green lungs: Parque del Oeste. The project, proposed as a competition-format exercise made in 2 weeks, is based on the design of several pavilions located in the heart of the park. We called our proposal 'Physical Interfaces for Hyperlinked Societies' demonstrating that the answer to the problem would not be simple but full of faces and aspects. Firstly we started our approach looking for nodes of possibilities, spaces where circumstances meet each other and generate opportunities; secondly, we proposed different kind of designs and pavilions depending on the nature of the circumstance; and finally we propose a particular solution: architecture working as a physical support for human relations.