The museum is built on stilts to elevate the main exhibition galleries above the Tâmega River’s flood line.
Architect Siza Vieira designed the building to utilize natural light filtered through high-positioned openings to protect sensitive canvases.
Nadir Afonso, the museum's namesake, was a trained architect who worked with Le Corbusier before focusing entirely on geometric painting.
The floor plan is elongated to mirror the topographical contours of the riverbank.
The museum serves as a critical node in the urban regeneration project of the city of Chaves.
The facade features a stark, white-washed finish characteristic of Siza Vieira’s minimalist style.
The Museu de Arte Contemporânea Nadir Afonso (MACNA) is a modernist architectural landmark in Chaves, Portugal, designed by Pritzker Prize-winning architect Siza Vieira. Situated on the banks of the Tâmega River, the building features a long, elevated concrete structure supported by pilotis to mitigate local flood risks. It serves as the primary repository for the geometric and abstract paintings of the Portuguese artist Nadir Afonso. The interior design emphasizes natural light, using expansive glazing to frame views of the surrounding landscape and the historic city center. Beyond the permanent collection, the museum hosts rotating contemporary art exhibitions and cultural events. The structure acts as a bridge between the river and the urban fabric, integrating minimalist aesthetics with functional engineering.
From the opposite riverbank path to capture the full horizontal profile of the building against the river.
Walk the perimeter of the building at river level to appreciate the scale and architectural support structures.
Visit the library space within the museum for a quiet view overlooking the river.
Pair your visit with a walk across the nearby Trajano Roman Bridge for a wider perspective of the museum's riverfront placement.
Do not attempt to view the museum only from the street side; ensure you walk down to the riverbank path to see the full architectural design.
Closed on Mondays.
Maintain a quiet volume and refrain from touching the artwork; standard museum photography rules apply.
