Alejandro Aravena is a Chilean architect known for his humanitarian approach to design. He founded the firm Elemental to tackle issues like poverty and slums through community-engaged design. Some of his notable projects include low-cost housing in Chile that are "half-built" for residents to complete, a concrete-carved innovation center building in Santiago, and lookout points in Mexico designed for pilgrims. Aravena's work focuses on practical and sustainable solutions through participatory processes.