ZIN is the project to transform Towers 1 and 2 of the WTC complex in the Brussels North area. This emblematic project is the first in the North area to combine different functions in a highly innovative way.

A project by Befimmo


We are very proud to announce the launch of the ZIN website. We invite you to have a look at www.zin.brussels. Are you curious about the project's progress? Do you want to find out what exactly is meant by circular construction and who are behind the ZIN project? You will find all the answers on our brand new website.


Circular construction - a documentary of RTBF about ZIN


Circular construction - a documentary of Terzake about ZIN


When old concrete becomes new concrete

ZIN scores a first in Belgium! Part of the rubble of the old WTC towers is being used to make new concrete. This is preceded by an ingenious process. Some 30,000 tonnes of dismantled concrete is transported to the ABR site, a stone’s throw from the site. There it is ground and transformed to new granulates, which are tested for quality, and then integrated into new concrete used for the construction of ZIN. This greatly reduces the use of new raw materials, waste production and the environmental impact of transport. On our website, we will regularly post information about the circular building process of the ZIN project, which is a good reason for you to visit www.zin.brussels from time to time.

The future is here

28 floors dismantled in 30 weeks

The works started in August. With surgical precision, one floor of the existing WTC towers was dismantled each week until only the core and part of the base were left. Quite a spectacle right in the centre of the Brussels North area!

If you want to see the process yourself, have a look at the Timelapse below from August to today.


From WTC 1 & 2 to ZIN in 5 phases

Phase 01: Application and delivery of permit

Phase 02: Preparatory work, cleaning and asbestos removal

/ Phase 03: Dismantling of the towers – start in August 2020

Phase 04: Construction of central volume, reconstruction of towers and completion

Phase 05: Building delivery – winter 2023: complete hand-over


A project by logo befimmo

Architecten logo-lauc-paris  logo-jaspers-eyers  logo-51N4E