The University of L’Aquila (DISAT) and Politecnico di Milano (DIS) have the pleasure to announce the fourth edition of the International Conference on Experimental Vibration Analysis for Civil Engineering Structures (EVACES 2011). After successful three previous editions in 2005 at Bordeaux (France), in 2007 at Porto (Portugal) and in 2009 at Wroclaw (Poland), EVACES 2011 will be held at the historic congress centre of Villa Monastero, Varenna (Lecco), Italy on October 3-5, 2011.