Terrain Vague

Stub note: This page was created during the ingest of Stalking Detroit and requires fuller treatment as more sources on post-industrial void space are ingested.

Definition

Terrain vague (Ignasi de Solà-Morales's term, from his 1995 essay "Terrain Vague") names the post-urban, residual spaces of the abandoned industrial city — vacated, indeterminate lands that are "foreign to the urban system," its "negative image," and yet paradoxically fertile: "Void, absence, yet also promise, the space of the possible, of expectation" (Solà-Morales, quoted in Daskalakis & Perez, "Projecting Detroit"). The term is deliberately double: vague carries both "empty/uncultivated" and "vague/wandering," so the concept binds physical vacancy to free time, expectancy, and "our strangeness in front of the world." In Stalking Detroit, Detroit "exacerbates and universalizes" the condition: the terrain vague is "no longer that anomalous space... at the margins of the city, but one that is ubiquitous," invading the urban core — "tangible evidence of the dissolution and imminent obsolescence of the modern, industrial city."

Key Thinkers

• Ignasi de Solà-Morales — coined the concept in "Terrain Vague" (1995); dedicatee of Stalking Detroit and (posthumously) author of its afterword "Impossible Urbanism," where Detroit is experienced as a city of "ruins of the future."
• Committee for Urban Thinking: Detroit — Daskalakis & Perez's "Projecting Detroit" operationalizes the concept as a design strategy: an "architecture of absence" using landscape (the horizontal, the surface) rather than building; Bob Arens reads Tyree Guyton's Heidelberg Project as community engagement with "the inherently troubling realm of terrain vague."
• James Corner — response "Landscraping": void spaces are not leftovers of desertion but constructions — staged, "set-up" open grounds for "wholly indeterminate futures," managed by diagrams and logistical infrastructures (Koolhaas/OMA's Melun-Sénart linear voids, Geuze/West 8's empty scenarios, the English Commons, the Indian Maidan).
• Charles Waldheim & Marili Santos-Munné — "Decamping Detroit" treats decommissioned zones of indeterminate status as the ground for landscape urbanism (Waldheim coined the term c. 1990), modeled on Tarkovsky's Stalker Zone.

Related Concepts

• derive — both détourned, non-productive encounters with urban residual space; Young's "Line Frustration" uses the dérive to traverse Detroit's vacant boundary territories.
• psychogeography — the perceptual mapping of ambiance that complements the terrain vague's indeterminacy.
• spectacle — the danger that vacated terrain is aestheticized (ruin tourism, Vergara) or re-colonized by media image and "an urbanism of the simulacra."
• neoliberal-metropolis — the political economy of vacancy: disinvestment, "indirect land value," and the re-colonization of voids by stadia, casinos, and speculative image.

Source Support

Sources in the wiki that discuss this concept:

• Stalking Detroit — Solà-Morales's concept quoted and radicalized throughout: Daskalakis & Perez's "Projecting Detroit" builds directly on "Terrain Vague"; Arens (Heidelberg Project) and Corner ("Landscraping") extend it.

Open Questions

• Is the terrain vague's "expectancy" politically progressive, or (per Herron's critique of Vergara) always already exposed to capture by nostalgia, tourism, and speculative re-colonization?
• How does the terrain vague relate to Lefebvre's everyday life — is vacancy the everyday at its most stripped-down, or its negation?