RT Conference Proceedings SR 00 A1 DETRY, Nicolas T1 « Patrimoine urbain, restauration et écologie : exemples en Rhône-Alpes » YR 2011 FD 9 & 10 juin 2011 SP 85 OP 94 K1 Restauration architecturale K1 Architectural Restoration K1 Developpement durable K1 Sustainability K1 "de la restauration critique et créative" K1 "the critical and creative restoration" K1 Restoration projects K1 Historic buildings K1 Historic houses K1 Facades K1 Stairways K1 france AB The article is based on four projects in Lyons : old buildings restored and rehabilitated with varying degrees of intervention adapted to each case. One project (still unfinished) is also discussed : the house of Jacques-Joseph and Jean-François Champollion in Vif, near Grenoble, which must be restored an transformed into a place of memory. Through these examples, we will attempt to show how the restoration of old buildings in city centers (such as Lyon, World Heritage of UNESCO), may be part of a sustainable development objective. Although these projects are formally quite different, we find the same working method, a common theoretical approach. We project the existing in a global ecological approach. This leads, via the analysis and the project, to the understanding of the multiple values of architectural heritage (art and history value, authenticity, memory, creativity, urban and social role ...). The approach called «the critical and creative restoration», inherited from the School of Rome (Giovanni Carbonara) provides us with a set of guide lines that we often refer to. T2 Bâti ancien & développement durable, vivre en centre ancien ED Cahors AV Published LK http://openarchive.icomos.org/id/eprint/1655/