Tatiana Bilbao is a house that will be the first prize in the traditional Sorteo Tec Lottery 2016, run by the Tecnológico de Monterrey university. The lottery raises scholarship funds offered to high-achieveing Mexican youth whose socio-economic status may prevent them from attending college.The house is located in Monterrrey, a financial and industrial center, nestled in the Sierra Madre Oriental mountain range. Within the site, the house blending the inside and outside creating a mutual dialogue between both conditions.The house is organized around a spiraling, fluid spatial continuity, with split-levels separating each floor. The rooms are arranged from the most public space, the entrance, to the most private space around a central skylight. This configuration creates a spatial gradation within the dwelling that makes every step a subtle discovery of the entire house and outer environment.The gabled roofs echo the majestic mountainous landscape of Monterrey while resonating the typology of the typical western house. This shift of surfaces adds richness to the spatial mood within the house. The space opens up and narrows down as people move through it transforming every step in a constant spatial metamorphosis. The monumental windows frame stunning views of the mountains that surround the city, creating new conditions in every room.