MANFRED WEHDORN, born 1942, is an internationally recognised architect, urban designer and preservationist, and was commissioned by the municipal authorities to plan Viennaâs candidacy for a UNESCO World Heritage Site. Of his work as an architect, the Redoutensäle, the Museum Quarter and the Gasometers alone have become an integral part of the city. MARIO SCHWARZ is professor at the University of Vienna's Institute of Art History, his main fields of interest being architectural history and archaeological building research. His is on the board of a number of preservationist organisations and is author of numerous scientific publications on art. SUSANNE HAYDER, born 1967, has a degree in art history and building preservation. She is currently involved in inventory projects for the Vienna authorities.
