The Society for Intercultural Education, Training and Research (SIETAR) is the world's largest network of professional interculturalists. The Society is a venue for the improvement of research, education, and practice in intercultural relations. New research, new educational techniques and new practice can develop only in conjunction, each of them supporting the validity of the others and forming a body of knowledge that can be passed on to future generations of theoreticians and practitioners. SIETAR congresses are the major vehicle by which this knowledge is disseminated in and beyond the organization. The SIETAR Europa 2007 congress in Sofia, Bulgaria, is obliged to this vision. The SIETAR 2007 congress theme is: "East, West, North and South: Culture's Influences on Economy, Politics, Ecology and Religion". This broad scope gives room to accommodate a multitude of topics, including: (1) New approaches in intercultural theory and research (2) Ethics of intercultural education and training (3) Environment, ecology and culture (4) Religious diversity within Europe and religious challenges to cultural work (5) Intercultural aspects of EU project work (6) Cultural diversity in multicultural societies (7) Cultural diversity in the corporate world (8) New methods in intercultural training and education (9) Intercultural trainings in business settings (10) Intercultural trainings in healthcare, schooling and social work (11) Special focus Eastern Europe: challenges of EU-accession (12) Special focus Eastern Europe: state of the art of intercultural work