Aedas Shapes Five Sail-Like Towers Along the Qiantang River in Hangzhou

Five towers rising like billowing sails from a hull-shaped podium: that is the governing image behind Guanyun Qiantang City, a 220,000-square-meter mixed-use development completed in 2024 by Aedas. Positioned in the core of Qianjiang Century City, the project sits between the Qiantang River to its west and the Olympic Sports Expo Centre to its south, occupying a triangular site that will soon be served by Metro Lines 2 and 6. The towers, clad in staggered glass curtain walls and silvery grey aluminum panels, do not simply line up along the waterfront. They splay outward, separated by a branching watercourse that pulls the river's presence deep into the plan.

What makes the project worth examining closely is the way it negotiates between spectacle and permeability. The Chinese axiom "ride on wind and break through the wave" gives the towers their dramatic silhouettes, but the real design intelligence lives at ground level, where a sustained pedestrian network stitches together waterfront promenades, terraced green space, and commercial plazas. Aedas borrows the traditional garden principle of being "encircled, not enclosed," meaning the massing reads as a single composition from the river but breaks apart at the human scale into layered, breathable outdoor rooms.

A Skyline Built from Sails

Seen from across the Qiantang River, the towers form a rhythmic cluster of varying heights and overlapping profiles. The sail metaphor works because Aedas avoids uniformity: each tower leans or curves slightly differently, so the ensemble reads as a fleet in motion rather than a wall of glass. The silvery grey aluminum panels reinforce this, catching light at different angles across the day and producing a shimmering effect against the water.

At dusk, the effect compounds. The towers' glass curtain walls become translucent screens, and the illuminated podium traces a continuous luminous line along the waterfront. From the calm water, the reflection doubles the composition, creating a symmetry that no single vantage point at street level can offer. It is a skyline conceived for distance, an intentional signal that this stretch of river is now a new urban center.

The Ribbon Podium

The podium is where the design's ship-hull metaphor becomes spatial rather than purely visual. A three-storey retail base connects the two northern towers, its curved envelope wrapped in horizontal ribbons that echo the rolling motion of a wave. The material shifts here: warm-toned panels and louvers replace the towers' cooler glass, anchoring the base to the pedestrian realm and distinguishing the commercial program from the office floors above.

The curvature is not cosmetic. It creates pockets of sheltered outdoor space at ground level, directing foot traffic around planted beds and along shaded walkways without the abruptness of a rectilinear block. The podium's roof terraces, visible in the aerial views, extend this logic vertically, offering breakout spaces for office users on platforms that step down toward the river.

Ground-Level Permeability

Aedas clearly invested design effort where many commercial developments coast on generic lobbies: the pedestrian experience beneath the buildings. Cantilevered podium overhangs with slatted wood soffits shelter walkways that run the full length of the development, linking the waterfront promenade to the interior courtyards. Horizontal louvers filter light overhead, producing a dappled quality that softens the scale of the structures looming above.

The effect is closer to a covered garden path than a corporate arcade. Hedges and planting beds line the routes, and the branching internal watercourse draws the Qiantang River's presence into areas that would otherwise read as back-of-house circulation. It is a deliberate application of the "encircled, not enclosed" principle: you are always within the complex but never feel trapped by it.

Facade Detailing Up Close

At close range, the towers reveal a finer grain than the distant skyline suggests. The staggered glass curtain walls are articulated by horizontal bronze-toned mullions that catch warm light at golden hour, breaking the surface into legible bands. Seen from directly below, pairs of glass facades converge at a central vertical spine, creating a knife-edge profile that reinforces the sail geometry even from the most compressed viewing angle.

Ribbon louvers on the lower levels serve a dual purpose: they shade the retail floors and transition visually between the podium's opaque cladding and the tower's transparent skin. The detailing is consistent enough to unify the five towers without making them identical, a calibration that large-scale commercial projects frequently botch.

Landscape as Connective Tissue

The curving paved plaza between the podium levels is the project's civic heart. Planted beds follow the curvature of the building envelope, and the ground plane tilts gently toward the river, telegraphing direction even when the water is not yet visible. The three southern towers are organized along a green spine of vertically networked platforms, meaning that landscape is not confined to the ground floor but climbs through the section.

Seasonal planting adds temporal richness. The project photographs span spring, autumn, and winter, and the architecture responds well to each: the warm aluminum panels harmonize with autumn foliage, while the glass volumes sharpen against bare branches. It is a sign that the material palette was chosen with Hangzhou's four distinct seasons in mind, not just a single promotional shoot.

Plans and Drawings

The site plans confirm what the aerial photographs imply: the five towers are not symmetrically arranged but staggered across a triangular plot, with the branching watercourse creating distinct northern and southern precincts. Color-coded program zones show retail concentrated in the podium and at ground level, while office space occupies the towers. The urban context map reveals how the site bridges two larger planning districts, Qiantang Century City and Qianjiang New City, acting as a hinge between existing infrastructure and the emerging CBD.

The floor plan of a typical tower level shows an irregularly shaped footprint with a central core and perimeter columns, a layout that maximizes usable floor area while allowing the facade to follow its curved geometry without structural compromise. Three arterial roads frame the site, and the adjacency to two metro lines promises the kind of transit connectivity that justifies this density.

The building section and elevation drawings make the sail metaphor structurally legible. The towers taper and lean as they rise, with horizontal banding that reinforces the layered quality visible in the photographs. The podium reads as a continuous datum line from which the towers spring, its gentle curvature grounding the composition and giving the waterfront edge a coherent civic scale.

Why This Project Matters

Waterfront commercial developments in Chinese cities have a mixed track record. Many deliver impressive skylines that photograph well from a kilometer away but dissolve into hostile plazas and dead retail at street level. Guanyun Qiantang City does not entirely escape that risk, but its sustained attention to the ground plane, its branching water feature, and its layered pedestrian network suggest that Aedas took the civic obligation seriously. The "encircled, not enclosed" principle borrowed from Chinese garden design is not just a marketing phrase here; it is readable in the plan.

The project also demonstrates that cultural metaphor in commercial architecture does not have to be heavy-handed. The sail imagery organizes real decisions about massing, orientation, and facade articulation rather than existing as a narrative applied after the fact. Whether Guanyun Qiantang City fulfills its promise as a new urban center will depend on factors beyond architecture: transit completion, retail programming, public management of the waterfront. But as a physical framework for a future CBD, it sets a standard that the neighboring blocks will have to answer to.

Guanyun Qiantang City, designed by Aedas. Located in Qianjiang Century City, Hangzhou, China. Total area approximately 220,000 square meters. Completed 2024. Photography by Arch-Exist.

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