Beneath the visible surface of cities lies an invisible architecture. Subways, tunnels, water systems, data cables, and bunkers form a dense network that sustains urban life while remaining largely unseen. The ground beneath our feet is not a void but a complex territory that holds the infrastructures, memories, and anxieties of our age. In recent years, as land becomes scarce and climate pressures intensify, architects and urbanists have turned their gaze downward, rediscovering the subterranean as both a physical and conceptual frontier. To design underground is to engage with the unseen mechanisms that shape the world above.

The subterranean has long been a site where architecture intersects with politics, technology, and belief. From the catacombs of Rome to the industrial subways of modernity, descent has symbolized both protection and exposure. Twentieth-century urbanism transformed this gesture into a system: metros, shelters, and utilities redefined the city section as an instrument of governance. Beneath the promise of efficiency and progress, the underground absorbed the anxieties of an era of war, surveillance, and collapse. Its evolution reveals not only how societies build, but also how they fear.

Today, the ground has become the new frontier of urban expansion and ecological adaptation. As digital infrastructures, energy systems, and climatic buffers migrate below grade, architecture confronts a space both technical and metaphysical — essential yet marginal, invisible yet decisive. To think in sections rather than in plan is to recognise that contemporary cities no longer exist solely in their skylines but also in their depths. The challenge for architecture is not only to occupy that space, but to render it legible, to turn the unseen into knowledge, and the hidden into a new terrain of design.

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Blending vernacular techniques with contemporary experimentation, Mexico's architectural landscape is shaped by a continuous dialogue between tradition, materiality, and modernity. As the fifth most biodiverse country in the world, Mexican architecture seeks to respond to its vast range of natural environments, climates, and cultural traditions, all within a territory marked by striking contrasts. Reflecting a visible duality, it can embody both exclusivity and act as a catalyst for social transformation.

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Around the world, a passionate community of bird watchers, from novice observers to seasoned ornithologists, is drawn to the subtle movements, distinct calls, and remarkable migrations of birds. This global fascination has led to the creation of thoughtfully designed spaces by architects and designers, enhancing the bird-watching experience while respecting the ecological landscapes in which they are placed.

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Reflecting on 2024, numerous architectural exhibitions have opened worldwide, addressing various themes, exhibition formats, and featured architects. Architectural design and architecture practice influence our daily lives in subtle and often unnoticed ways, where the end-users embrace built environments as they are. This reaction may arise from a combination of factors, such as a sense of powerlessness to enact significant change after a building is constructed or the experience of growing up in environments over which individuals had little or no agency in shaping. For these reasons, architectural exhibitions serve an essential purpose, offering society a chance to pause, reflect, and critically examine the myriad issues that surface during designing and building. These issues are often overlooked or need to be acknowledged, as practitioners may prioritize delivering projects within strict timelines over exploring more profound reflections.

In 2024, museums, galleries, and curators responded to the evolving challenges within the built environment with various approaches. Some exhibitions questioned the ethics of building materials and the practices behind supply chains, drawing attention to the broader implications of material choices. Others focused on documenting architectural movements worldwide, emphasizing their cultural and historical significance and the urgent need to preserve and adapt rather than replace them with entirely new builds. These efforts highlight the role of exhibitions in raising awareness about pressing issues while fostering a more critical dialogue about the architectural discipline.

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