This article examines a new dataset of radiocarbon dates that provides insights into the progressive installation of Inca infrastructure in the Copiapo Valley, situated at the southern edge of the Atacama Desert in northern Chile. It shows that the Inca imperial expansion in this region was not a linear process and was likely shaped by local negotiations and conflicts. The findings describe three main stages of Inca expansion. The first is the construction of the North–South Inca Road and the establishment of high-altitude mountain shrines. The next stage consisted of a physical intervention in a local village located in the upper valley, including the construction of administrative buildings and public spaces. The last stage involved indirect intervention in local villages, characterized by the presence of isolated administrative buildings that were potentially used for diplomacy and negotiation. I argue that the Inca imperial expansion, characterized by evolving strategies across regions and time periods, not only demonstrates the state's capacity for learning but also suggests the pivotal role of local actors in positions of power who wielded agency to shape these developments.

This article contends that Brazil's evangelical Christian networks increasingly function as penal infrastructure. Since the 1990s, the scale and scope of evangelical involvement in the criminal justice system have grown significantly. One clear result is that the capillary relationships that constitute Christian community now mobilise resources to support or even substitute the basic functions of punishment. I draw on fieldwork in Rio de Janeiro to understand this shift and its broader implications for the Brazilian project of incarceration. I also make a general claim for thinking with and through infrastructure as a pathway to understand penal governance.

During the Cold War, Havana symbolised the struggle for national liberation in Latin America. Yet in few other places on the island of Cuba did the Revolution's visions of development materialise as they did in the southern city of Cienfuegos. This article examines why two half-finished nuclear reactors and a decaying ‘nuclear city’ still remain in Cienfuegos. Through a comprehensive spatial and infrastructural transformation of Cuba, the revolutionary government sought to remedy the evils of dependency and unequal exchange. Cienfuegos, and its shifting place in the Cold War political economy, demonstrates how a radical critique of urbanisation merged with the spatiality of centralised energy infrastructure in the pursuit of ultimately-failed nuclear modernity. The history of Cienfuegos draws the academic gaze away from Latin America's major cities to broaden the ‘geographies of theory’ in urban, energy and Latin American studies.