Mexican architect Alberto Kalach (born 1960) founded Taller de Arquitectura X (TAX) in 1981, and for more than 35 years the firm’s work has produced a wide range of projects: from private commissions to public buildings, from solutions for confined spaces to urban planning problems. The scale of the commission may vary, but the approach remains the same, always driven by a sense of curiosity and experimentation; TAX describes itself as somewhere between “a lab, a greenhouse and learning team.” Rather than adhering to a specific style, TAX’s constancy is methodological and conceptual, allowing the studio to be prolific, versatile and consistent simultaneously. The studio’s work has long been motivated by Kalach’s concerns about—and research into—the particular challenges and problems of his native Mexico City. To this end he has designed a minimalist house that can be built for $5,000, the largest public library in Latin America and an ambitious proposed plan to restore Mexico City’s ancient lakes (which remai