Can a skyscraper function as a living, breathing forest?
In short: In Milan, two residential towers are rewriting the rules of urban living. Rather than just glass and steel, the Bosco Verticale uses a massive vertical ecosystem to fight pollution, regulate temperature, and bring biodiversity back to the concrete jungle. It is not just a building; it is a thirty-floor tree.
Designed by Boeri Studio, the Bosco Verticale consists of two Milanese residential towers within the Porta Nuova area, opened in 2014. Standing at heights of 116 metres and 84 metres, these towers host a staggering amount of vegetation: 730 trees, 5,000 shrubs, and 11,000 perennials and groundcover. This greenery is so dense that the vegetation is equivalent to one hectare of forest.
The mechanism is a sophisticated feat of engineering. To prevent root damage, plants are housed in concrete containers equipped with bituminous waterproof layers and anti-root polyethylene sheaths. Large trees are secured with aerial steel anchoring systems to prevent them from falling during extreme weather. The ecosystem is sustained by a centralized drip irrigation system that uses reclaimed graywater or groundwater, monitored by sensors that automatically shut off the flow if temperatures drop below 0 degrees Celsius.
The environmental impact is multifaceted. The 'living facade' acts as an active interface, filtering fine particles from traffic, absorbing carbon dioxide, and producing oxygen. It also mitigates the urban microclimate by reducing noise pollution and providing solar shading. Beyond the plants, the building supports local fauna; in 2014, 1,600 birds and insects were counted within the complex.
While the concept of green architecture has roots in the Hanging Gardens of Babylon and the works of Friedensreich Hundertwasser, the Bosco Verticale is a modern prototype. Its success has led to its replication in cities like Shijiazhuang, China, as a model for virtuous urban development.
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Sources
- Summary by Intellect · source: Bosco Verticale
- Also: Wikidata — Bosco Verticale · CC0
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