BUREAU highlights lake geneva lighthouse’s lattice geometry with blue accents

BUREAU Redefines the Lighthouse in an Urban Harbor Context

PHARE YLLIAM is a lighthouse developed by BUREAU architecture firm for the waterfront of Geneva, Switzerland. Lighthouses carry a clear functional purpose and a distinct spatial presence. As singular vertical structures positioned at the edges of landmasses, they serve as navigational markers and contribute to the reading of the surrounding landscape. The project works within this typology while adapting it to the specific conditions of Geneva’s harbor.

Unlike traditional coastal sites often associated with dramatic cliffs or exposed terrain, the Geneva waterfront presents a calm, controlled environment. The project responds by reinforcing its infrastructural identity rather than replicating the familiar aesthetic of conventional lighthouse silhouettes. Set against a landscape of riprap, the structure emphasizes its role as part of a broader system rather than a symbolic standalone figure.

all images by Dylan Perrenoud

Layered Vertical Sequence defines PHARE YLLIAM Lighthouse

The design references the hyperboloid structures developed by early 20th-century Soviet engineer Vladimir Shukhov, particularly their efficiency, transparency, and structural lightness. This approach results in a lattice form that visually shifts with changing light and atmospheric conditions, allowing the lighthouse to appear and recede depending on the viewpoint. Its vertical structure is anchored by a solid mineral base, a reinterpretation of the stone blocks that line the harbor.

The project also introduces a new spatial sequence along this extension into the lake. The interior program spans three levels, each offering distinct spatial conditions. The base level forms a sheltered interior with a panoramic opening toward the water. Above it, a compact cabin-like space provides an elevated 360-degree view across the lake. At the top, a movable lantern constitutes the project’s key functional element. Integrated within the structural pillars, the lantern can be raised or lowered to accommodate operational and environmental needs.

PHARE YLLIAM by BUREAU design studio integrates structural experimentation, infrastructural clarity, and site-specific landscape considerations. Through its form, material strategy, and operational features, the project proposes a contemporary interpretation of the lighthouse as both a working element of the harbor and an architectural structure shaped by its immediate context.

PHARE YLLIAM introduces a new lighthouse structure to the Geneva waterfront

positioned on riprap, the lighthouse integrates with the existing shoreline landscape

the project reinterprets the traditional lighthouse typology for an urban harbor context

the vertical form acts as a navigational marker along the edge of Lake Geneva

the middle level resembles a compact cabin with a full 360-degree view

the lattice geometry responds to light, atmosphere, and changing viewpoints

the uppermost section houses a lantern integrated within the structural pillars

the lightweight framework creates shifting visual transparency throughout the day

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project info:

name: PHARE YLLIAM

architect: BUREAU

lead designers: Daniel Zamarbide | @daniel_zamarbide, Carine Pimenta, Galliane Zamarbide

location: Geneva Lake, Switzerland

area: 160 sqm

photographer: Dylan Perrenoud

designboom has received this project from our DIY submissions feature, where we welcome our readers to submit their own work for publication. see more project submissions from our readers here.

edited by: christina vergopoulou | designboom