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Today's housing crisis is a global phenomenon that can be broadly divided into two major problems: a shortage of residential buildings and barriers to accessing those that already exist. The deficit is real and concrete when it comes to what the UN calls "adequate housing for all." According to UN-Habitat, an estimated 96,000 new housing units would need to be built per day to meet population needs by 2030. Climate change and forced migration are broadening the gap. But 2.8 billion people worldwide, representing nearly 40% of the global population, lack access to stable shelter, secure land, and basic sanitation services not only because of underproduction, but also due to an economic barrier: an affordability crisis. As demand grows and prices rise, housing, now increasingly functioning as a form of social security, becomes a target for rental income and real estate speculation. As adequate housing is a human right, pressure on governments and private entities is increasing worldwide to limit speculation and ensure fair access to existing dwellings. Below, we present four examples of initiatives in Spain, Australia, France, and the United States that aim to urgently expand housing access while limiting speculation.

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Architecture has traditionally been described as a discipline concerned with space, form, and material presence. Yet this understanding becomes increasingly limited when confronted with the conditions that shape contemporary construction. Buildings no longer emerge from a stable relationship between site, program, and material. Instead, they are produced within a dense web of technological systems that operate across territorial, ecological, and temporal scales. Energy networks, data infrastructures, extraction processes, and global logistics shape architecture as decisively as climate or urban context.

Seen from this angle, architecture is less a discrete object than a moment within a larger technical field. Supply chains, data systems, automated maintenance, and energy grids do not sit "behind" the built environment. In a certain way, they influence what can be built, what is affordable, how buildings perform over time, and what kinds of waste they produce. When architecture is assessed primarily through form, it risks overlooking the systems that condition its production and afterlife.

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Symbols of technological development and urban density, tall buildings as we know them today emerged in the late nineteenth century, particularly in the United States, as a response to the rapid expansion of urban commerce and the need to grow cities without occupying additional land. The term skyscraper, for instance, was coined in the 1880s and originally referred to buildings with around 10 to 20 stories—an impressive height for the time.

However, the idea of building vertically is much older than the steel-and-glass skyscrapers of modern cities might suggest. Long before the Industrial Revolution, some societies were already experimenting with forms of vertical urbanization as a response to limited space, territorial defense, or environmental adaptation.

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