The Quetzalcoatl Nest Facade (1999) was designed for the architecture project Quetzalc.atl Nest, built in an irregular 5,000 m² land in the State of Mexico. In this project, Senosian parted from the uneven land, respecting caves, ravines and green areas in order to keep the natural qualities of the site, with a volumetry that evokes the curved body of a serpent.