RA! is an architecture office founded by Santiago Sierra, Cristóbal Ramírez de Aguilar, Pedro Ramírez de Aguilar in 2017 based in Mexico City.

RA! understands architecture as the study and production of spaces that stimulate and shelter human beings. Through this thought, RA! classifies architecture according to human relationships: societal, personal and interpersonal, always placing individuals as the center of their design. 

RA! is in a constant exploration, so experimentation is an inherent process of their vision. Experimental projects allow the practice to explore new design possibilities and unknown tools to keep an evolving vision. 

The studio seeks an architectural proposal through questioning, investigation and the use of various tools that range from analogous to digital which allow each detail to be expressed, explored and communicated, with the objective of moving those who inhabit it.