Invisible works, essential and complex
Foundations are invisible works, but essential for the superstructures they support. The works involved are constantly becoming more complex
Mankind has always tried to dominate the soil in order to build on it.

Construction, at Sangatte (Département of Pas de Calais), of the access shaft for construction of the Channel Tunnel (Rights reserved)
From the Tower of Pisa to the Montparnasse Tower
Published on 3 March 2008 (updated on 12 March 2008)