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10Selected works2021 to 2025

47.5596 N, 7.5886 E

Architecture / Interiors / Objects

Basel / Lisbon

Architecture / Interiors / Objects

Basel / Lisbon

06 / 10

Pl. 06 / Cultural

Museum Annex

A stone box that asks the old museum to keep its voice down.

Pl. 06 / Cultural

Museum Annex

A stone box that asks the old museum to keep its voice down.

Location

Antwerp, Belgium

Year

2025

Type

Cultural

Size

2,100 m²

Status

Opened 2025

Client

Kunsthuis Antwerp

Project

The annex adds two galleries and a foyer to a nineteenth-century museum. It does not imitate the brick of the old building. It is a quiet monolith of pale limestone, cut into slots where the new meets the old.

Inside, the galleries are top lit. The floor is the same stone as the facade, honed until it reflects the sky without glare.

Fig. 1

Gallery 1, top light at noon

Level 1 plan

Scale

1:250

Fig. 3

Honed limestone, shell inclusions, 30 mm joints

Materials

Honed limestone

Bronze

Oak

Skylight glass

Credits

Architecture

Monolith Office

Heritage

Erfgoed Studio

Lighting

Atelier Lumière

Client

Kunsthuis Antwerp

Basel

Klybeckstrasse 21

4057 Basel

Switzerland

Lisbon

Rua da Boavista 84

1200 Lisboa

Portugal

© 2026 Monolith Office

A fictional practice, built as a design exploration

Made with love by

Basel

Klybeckstrasse 21

4057 Basel

Switzerland

Lisbon

Rua da Boavista 84

1200 Lisboa

Portugal

© 2026 Monolith Office

A fictional practice, built as a design exploration

Made with love by

Basel

Klybeckstrasse 21

4057 Basel

Switzerland

Lisbon

Rua da Boavista 84

1200 Lisboa

Portugal

© 2026 Monolith Office

A fictional practice, built as a design exploration

Made with love by

Basel

Klybeckstrasse 21

4057 Basel

Switzerland

Lisbon

Rua da Boavista 84

1200 Lisboa

Portugal

© 2026 Monolith Office

A fictional practice, built as a design exploration

Made with love by

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