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Fortstraat · Mortsel, Belgium

Nature meets heritage: reweaving the 19th-century fort into the city

 
 

Fort 4 is one of seven Brialmont forts built between 1860 and 1864 as part of Belgium’s National Redoubt. Over time, the fort became disconnected from the surrounding urban fabric. Through the redevelopment of the Fortstraat street as part of the park’s edge, we have re-established a vital link between the city centre and this historic site. One of our key challenges was to find a balance between the fort’s tranquil, historical character and its potential as a recreational space, while also protecting its sensitive ecological environment, including habitats for bats and other species.

 
Location
Mortsel, Belgium
 
Status
Constructed
 
Year
2015 - 2019
 
Project area
1,5 ha
 
Client
Stad Mortsel
 
Collaboration
Atelier Ruimtelijk Advies
 
Photography credits
Thomas Wolfs
 

Tracing the fort’s legacy

The design of Fortstraat draws inspiration from the original military layout. Straight lines and the reimagining of the former fort pond through new wadis echo the site’s historic structure. The park entrances along Fortstraat are marked with special cobblestone paving, creating a welcoming and recognizable environment. A wide walking and cycling path highlights the transition from the outer glacis to the fort’s ponds.

Opening the Fort's edges to create strong relations with the surrounding urban tissue
Fort 4's position in Antwerp's former defense system
 
Connecting slow traffic networks
Celebrating the greenery
 
 
Creator of meaningful places

Nature-driven design

Sustainability is at the heart of the project. Extensive green zones planted with native species and a wadi system for above-ground rainwater management reflect our commitment to ecological resilience. Surface water is collected via an open drainage element, naturally filtered, and gradually released into the fort’s ponds. To accommodate this water-sensitive urban drainage system, the street was redesigned with a new profile and materials that harmonize with the fort’s historic palette.

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