Mexico City: El Desagüe by Luis Ortega Govela

Francis Alÿs’s 1997 performance piece, *Paradox of Praxis I*, serves as a starting point for an exploration of Mexico City’s violent hydrological transformation. By pushing a block of ice through the streets until it evaporates, Alÿs retraces the vanished canals of Tenochtitlán, the Aztec capital that was systematically drained by Spanish colonizers to establish a terrestrial, European-style urban grid.