Communication Technologies; Transport and Urban Development; Individuals, Societies, Cultures and Health.It covers basic and more applied research and also addresses issues of pre-normative nature or of societal importance.The Action TU0801 is called: "Semantic Enrichment of 3D city models for sustainable urban development" and is one of the actions of the COST TUD domain (www.semcity.net).TU stands for Transport and Urban Development (www.cost.eu/domains_actions/tud) and is one of the COST key domains.It fosters research coordination in the fields of transport and the built environment, which play a strategic role in the modern society and economy.The Domain is by definition crosssectorial and multidisciplinary, encompassing a wide range of scientific expertises within the transport and land use planning, design, and management activities with a special emphasis on the strong interrelationships among the relevant policy fields as well on all aspects related to sustainable development.