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Provinciehuis Antwerp

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City, Country Antwerp, Belgium
Year 2013–2019
Client Provincie Antwerp
Architect XDGA
Services Structural Engineering
Facts GFA: 33,000 m² | NFA: 23,500 m² | Height: 60 m | Total area (Underground Parking): 13,500 m² | Certificate: BREEAM
Awards European Union Prize for Contemporary Architecture – Mies van der Rohe Award 2022, Nominated

The new headquarters, with a usable area of 33,000 m², was built on the existing site in the direct vicinity of a public park. The main components of the design consist of a transparent two-storey congress building, which crosses at right angles with the new office tower, which stands on two "feet" like a bridge resting on the lower building with two underground parking levels. In addition, a terrace on the roof of the Congress building offers a view of the adjoining park landscape. Key characteristic features of the new tower are its remarkable twist with a double-curved façade consisting of triangular window elements and white exposed concrete.

The primary task was to reinforce the 14-storey building, considering the dominant oblique position resulting from its rotation. Another challenge was the tower's dissolution on the lower floors: The building functions as a bridge spanning the transversely arranged congress building.

The supporting structure essentially consists of the access cores with the two-storey bridge girders, the ceiling slabs and the external perforated façade. The geometry of the façade nodes was optimised in a computer-aided algorithm process.

The Congress building, with its auditorium, exhibition hall and congress rooms located under the office tower, has an open floor plan with large spans.

Structural Engineering
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© B+G
© XDGA / ©Matthias Van Rossen