The Upside Dome by Gijs Van Vaerenbergh
From their website:
When visiting the St Michiel Church in Leuven one might overlook that the church has no dome. Pieterjan Gijs and Arnout Van Vaerenbergh build an installation that takes this seemingly trivial fact as a starting point and generate the missing dome in a remarkable way.
The installation casts light on the architecture of one of the most prestigious baroque churches of the Low Countries from a contemporary perspective. Using the design technique of the catenary, a new structure emerges in the church. The Upside Dome is a real size scale model, comprised of hundreds of meters of chain, which is literally and figuratively the counterpart of the unfinished dome.
Pieterjan Gijs (1983) and Arnout Van Vaerenbergh (1983) studied both architecture and work together under the name Gijs Van Vaerenbergh in a multidisciplinary practice with an important focus on public space.