Aerial view of the expansive museum landscape, showcasing increased gallery space and lush green surroundings.

Peter Zumthor’s Three-Part Museum Expansion at Fondation Beyeler Set to Open with Artistic Flourish

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Written by Seth Sebastian

2026-09-23

Gradual Opening of the Museum Expansion

Peter Zumthor’s architectural museum expansion of the Fondation Beyeler in Riehen, near Basel, is set to gradually open to the public, with a full unveiling scheduled for January 2027. This ambitious project introduces three new buildings, enhances the park, and restores historic structures, extending beyond Renzo Piano’s original design to create a harmonious space intertwined with art, architecture, and nature.

Glass-fronted gallery with large trees and spacious outdoors at Fondation Beyeler.
Close-up of modern architecture featuring geometric lines and minimalist design.

Three Distinctive Buildings in the Development

Selected from a field of 11 architectural proposals, Zumthor’s design divides the new functions across three remarkable structures: the Wyss Museum, Ammann Pavilion, and Erlen Torhaus. Each building uniquely engages with the landscape. This decision avoids a single overwhelming mass and respects the site’s historic pattern of villas and gardens, creating an environment where the new architecture feels as though it has naturally belonged to the site, enhancing the overall project.

Sunlit interior hallway with exposed wooden beams and concrete walls.

The Wyss Museum: A Stone-Centric Experience

The striking Wyss Museum offers 1,500 square meters of exhibition space, carefully integrated around existing trees. Constructed primarily with Jura limestone, the building emphasizes side lighting and spectacular views of the surrounding verdant landscape. Its unique spiral design ensures that both art and natural beauty remain center stage, playing a key role in the overall development.

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Visitors exploring an art installation in a spacious gallery room.

Ammann Pavilion: A Community Hub

The Ammann Pavilion, bridging the museum buildings and historic structures, serves as a social nucleus. Designed for versatility, it offers free public access and functions as both a lounge and cultural venue. The architecture blends glass and oak, highlighted by an acoustic setup finely tuned for various events, making it a significant component of the redevelopment.

Architectural model showing layout of museum buildings and surrounding gardens.

A Revived Landscape

Accompanying the architectural expansion is a transformation of the landscape, offering nearly 10,000 square meters of newly accessible parkland. This area forms a serene connection to the existing English landscape gardens and the wider Landschaftspark Wiese nature reserve, featuring native flora and thoughtfully placed artworks that enhance the visitor experience, contributing to the overall enhancement.

Outdoor view featuring water features and reflective glass surfaces of the museum.

Historic Structures Reimagined

The project also revitalizes existing structures with new uses. The heritage-listed Orangerie, redesigned by India Mahdavi, and the Ammann Atelier push the boundaries of art and education. Meanwhile, the Erlen Torhaus serves as a transition hub between the village and nature reserve, facilitating art logistics and housing workspaces as part of the expansion.

Artistically designed installation in a well-lit gallery space.

Reopening Details

The public can explore the expanded Fondation Beyeler during a preview phase before its full opening on January 15, 2027. The enriched venue’s inaugural exhibition, “Constellations,” will showcase over 200 pieces from the Fondation Beyeler collection spread throughout the museum and its grounds, ensuring a dynamic intersection of art and nature.

Museum café area with wooden furniture and natural lighting.

An Artistic Journey

An upper-level terrace at the Wyss Museum connects seamlessly back to the park, inviting visitors to wander freely between art and landscape, creating an immersive experience that unites the new and the familiar in a setting designed to be loved.

Gallery visitor looking closely at a wall-mounted painting.
Museum exterior view with reflective water surfaces and elegant design.
Well-maintained gardens and pathways surrounding the museum structure.
Panoramic interior shot of a large gallery with various artworks displayed.
Skylight view providing ample natural light into the exhibition hall.
Outdoor seating area surrounded by landscaped greenery and sculptures.
Evening shot of lit-up gallery, showcasing the striking design.
Close-up of a sculpture under a spotlight in an exhibition room.
Visitors strolling through a park area directly adjacent to the museum.
Detailed view of contemporary artwork inside the museum.
Exhibition room featuring thematic display and interactive digital screens.
Artwork captured by photographer Mark Niedermann with intricate brushwork details.
image by Mark Niedermann
Interior architecture photographed by Sabine Hess, highlighting structural lines.
image by Sabine Hess
Modern gallery shot by Sabine Hess, with minimalist art pieces.
image by Sabine Hess
Alexander Calder's The Tree in an airy gallery, captured by Katalin Deér.
Alexander Calder, The Tree, 1966 Fondation Beyeler, Riehen/Basel © 2026 Calder Foundation, New York / Artists Rights Society (ARS) New York | image by Katalin Deér
Pablo Picasso's Le Sauvetage displayed in a well-lit museum space.
Pablo Picasso, Le Sauvetage, 1932 © Succession Picasso / 2026, ProLitteris, Zurich | image by Mark Niedermann
Constellations installation view, showcasing dynamic arrangement and lighting.
installation view of Constellations | image by Mark Niedermann
Broad view of Constellations exhibition with scattered artworks.
installation view of Constellations | image by Mark Niedermann
Close capture of an artwork in Constellations installation by Mark Niedermann.
installation view of Constellations | image by Mark Niedermann
Artwork photo by Mark Niedermann with detailed texture and color.
image by Mark Niedermann
Modern sculpture garden outside the museum enhancement project.
Concrete and glass facade under a bright sky at the museum.

Sources & Links

Source: designboom.com

Frequently asked questions

When is the full unveiling of the museum expansion?

The full unveiling of the museum expansion is scheduled for January 2027.

What is the purpose of the Ammann Pavilion?

The Ammann Pavilion serves as a community hub, offering free public access, and functions as both a lounge and cultural venue. Designed for versatility, it includes an acoustic setup finely tuned for various events.

How is the landscape being transformed in the expansion?

The landscape is being transformed to offer nearly 10,000 square meters of newly accessible parkland, forming a serene connection to the existing English landscape gardens and the wider Landschaftspark Wiese nature reserve.