In Wuxi’s Jiangsu countryside, Hangzhou-based studio GOA (Group of Architects) has completed an open-air theater in which the human audience is the secondary occupant, sunk below grade so that wild raptors can sweep at eye level over 2,300 seated spectators. Commissioned by Yaohu Town for an ecological narrative show staged for both species, the 9,200-square-meter theater (99,028 sq ft) treats architecture, avian behavior, and performance as a single interlocking system rather than a building with a landscape backdrop. That inversion — designing the theater from the birds’ flight paths inward, not the other way around — sets the terms for every material and technical decision that follows.
A T-shaped valley structures the entire sequence: a narrow east-west corridor meets a wider north-south basin, and three cuboid entrance halls sit where the two axes intersect, splitting spectator circulation from the outset. Visitors then descend along a continuous, zigzagging stepped deck that follows the water’s edge, or along paths shaped by the site’s own undulating landforms — routes designed to keep human circulation apart from the protected aviary zones before anyone reaches a seat inside this land art theater.
Sinking the amphitheater into the valley was the project’s central strategic move: the 2,300-seat sunken amphitheateris calibrated against measured bird flight trajectories, so raptors can pass at eye level above the crowd while keeping a safe biological distance from both audience and nesting zones. It’s a strategy other Chinese architects have used to fold a theater into terrain rather than announce it — Wutopia Lab’s renovation of a Suzhou factory into a theater took an industrial shell and hollowed it inward instead of building outward, arriving at a comparable instinct to let the site’s existing logic dictate the architecture.
Cross-disciplinary development shaped nearly every avian-facing system: architectural logic, theatrical direction led by Yueshang Studio, and Puy du Fou’s avian behavioral consultancy developed in parallel rather than in sequence. Independent programmers run flicker-free LED systems that simulate natural dawn and dusk cycles to avoid psychological distress in the resident birds, while automated French-style sliding doors and dedicated “Sputnik” boxes let them come and go on their own terms — a working example of avian-friendly architecture built around behavior rather than aesthetics alone.
Acoustic control required the same precision as the light cycles: high-efficiency directional line-array speakers, engineered with consultant EZPro, restrict sound propagation strictly to the audience zone so that performance volume doesn’t spill into the nesting areas beyond it. The emphasis on sound as a spatial material — heard here as a boundary rather than a backdrop — echoes a theme 1Y Architects explored at the Echo Ruins Sound Museum in Zhuzhou, where acoustics were treated as a structuring device in their own right.
Concrete stands in for clay across the plinth and performance areas, where CNC-shaped concrete is hand-sculpted and paired with an imitative rammed-earth coating designed to replicate the tactile, rustic texture of raw pottery — a direct reference to Yixing’s status as China’s historic “Pottery Capital.” The resulting rough, sand-washed finish does double duty: it reads as a material story for human visitors and prevents visual disorientation or slipping injuries for the birds sharing the same ground.
The aviary zone, by contrast, is built from a lightweight, low-carbon steel frame wrapped in a skin of free-form woven HDPE cladding that mimics the region’s traditional woven bamboo fiber. High-Density Polyethylene was chosen over the real material for long-term weather resistance, natural glare reduction, and better ventilation, letting the theater translate a local craft technique into a component built to withstand an outdoor venue’s demands over decades rather than seasons.
Sustainability commitments run through the theater’s structure rather than sitting on top of it, with the design meeting the Two-Star Rating or higher of China’s Green Building Evaluation Standard. Soil excavated from the theater’s sunken pit was reused on-site to shape the surrounding sculptural slopes, achieving a site-wide earthwork balance, while back-of-house functions tucked beneath the terraced amphitheater draw on the earth’s own thermal mass for heating and cooling, and stepped green roofs function as “plateau gardens” that add a further layer of insulation.
Holding the irregular landform together required a BIM-directed system integration overseen by GOA, with hidden slot-drainage networks embedded along the terraced steps to manage mountain surface-water runoff before it feeds into the valley’s existing flood channels and water-recycling loops. Multimedia equipment, acoustic devices, and theatrical lighting are flush-mounted or hidden entirely within structural joints and carved concrete cavities — infrastructure kept deliberately invisible, so that when a raptor finally does sweep low over the audience, nothing built stands between the two.
The Earth Valley Theater by GOA (Group of Architects) | Location: Yaohu Town, Yixing, Wuxi, Jiangsu Province, China — Year: 2025 — Key materials: CNC-shaped hand-sculpted concrete with rammed-earth coating, woven HDPE cladding on a low-carbon steel frame