The project involves the redevelopment of the sanitary facilities within the historic City Weigh House in Poznań. Located in the heart of the Old Market Square, the building’s origins date back to the 16th century. Although the original structure was demolished in 1890, it was meticulously reconstructed in 1960 and currently serves as the Civil Registry Office, hosting wedding ceremonies and official city events.

The new spatial layout includes separate facilities for women, men and people with disabilities, 4 integrated with a corridor and a cloakroom. The focal point of the interior is a curved wall finished with warm oak veneer. This architectural element subtly conceals the entrances to the restrooms while incorporating upper glazing that allows natural light to penetrate the inner spaces. Beyond its aesthetic form, the wall serves a highly functional purpose, housing storage compartments and spacious wardrobes for guests.

The material palette balances historic weight with contemporary lightness. A geometric, diagonal tile pattern that defines the floor is contrasted by minimalist square white wall tiles and chrome fittings.
In the corridor, a built-in seat occupies a deep window niche, offering a moment of respite. One of the most distinctive features is the mirrored ceiling - it cleverly conceals technical installations while visually doubling the height of the space, creating an unexpected sense of openness in a traditionally utilitarian interior.