On Sunday 31 May 2026, the construction industry in Belgium is opening many doors to the general public. From 10 a.m. until 5 p.m., visitors have the opportunity to get an overview of the sector and discover the expertise present in the Belgian construction landscape. Of course, BESIX Group is participating in this construction event par excellence! For this edition, visitors can take a look behind the scenes of four construction sites on which BESIX and its affiliates are working:
Canal Tunnels - BESIX & BESIX Infra
BESIX, BESIX Infra and the other partners in the ROCO consortium are opening the construction pit for the future Canal Tunnels in Antwerp. These tunnels are an important part of the ROCO construction site, one of the partial projects of the overarching Oosterweel Link project. The Canal Tunnels consist of two stacked tunnels, beginning at the Amerikadok and diverging beneath the canal. Building these tunnels requires 4.7 kilometers of diaphragm walls reaching depths of up to 60 meters. These walls stabilize the groundwater and allow the ROCO team to create dry construction pits, essential for the tunnel works.
During Open Sites Day, you will get an exclusive look at the construction pit and the different phases: the excavation works, the horizontal beams of 30 meters long that keep the pit open, the diaphragm walls and the first concrete works on the tunnel floor. Extra special is how you’ll be standing in the middle of the busy Abert Channel.
Visitors do not need to register. For more info, visit the Open Sites Day website.
Grand Théâtre de Verviers - Wust
Opened by Wust, the Grand Théâtre de Verviers is undergoing a remarkable renovation. This historic site is being restored to its former glory while incorporating modern amenities. Open Sites Day visitors will be able to see the different phases of restoring a building from 1892.
Registration is mandatory and can be done here. You’ll need to be quick because the slots are filling up fast. Visit the webpage of this site here.
Constructiv - Vanhout
In the heart of Brussels, Vanhout is working on the new headquarters of Constructiv, the Belgian construction sector’s industry organisation. The project combines renovation and new construction to create a nine-storey HQ with strong sustainability ambitions.
Visitors will be able to discover a range of construction techniques, from facade finishes and steel structures to high-quality interior finishes. Highlights include architectural concrete with terrazzo and distinctive window designs, including an impressive bow window. To complete the immersive experience, take a seat in our construction simulator, try on our AI helmet, or explore our construction site in a virtual reality environment.
Visitors do not need to register. For more info, visit the Open Sites Day website.
Doctor’s practice - CIRCL
CIRCL specialises in creating high-quality, energy-efficient, and personalised residences. In Brakel, you can visit a new doctor’s practice designed by DAT Architects. Discover the modern façade with large windows and the warm, welcoming atmosphere inside, enhanced by the use of wood and sustainable ceramics.
Visitors do not need to register. For more info, visit the Open Sites Day website.
Join us on Sunday, May 31st, for Open Sites Day! Come by to discover who BESIX Group is and explore one of our active construction sites. Our site teams are looking forward to welcoming you and your family for an instructive and enjoyable day.
More information can be found on https://openwervendag.be/ or https://journeechantiersouverts.be/.