Bored by motionless monuments, Deprez devised a hypothetical structure for the site occupied by the former Martini tower in Brussels. Functioning like a thermometer, this hydraulic tower is designed to react to changes in the economic climate. When the stock market booms, the building rises. A downward economic trend, on the other hand, triggers its descent. Similarly, the tower is lengthened or shortened according to the supply and demand of potential residents.
This movable structure is a commentary on the dominance of tectonic thinking in architecture and urban planning: monumental structures are fixed in time and thus incapable of responding to the changing nature of the urban landscape and its inhabitants, or to any future societal challenges.