This volume brings together a representative set of the papers given at the third annual Intercultural Horizons conference held in Siena, Italy, in October 2013. The conference attracted presenters and attendees from a variety of nations throughout five continents. The papers included in this volume are drawn from a series of conference sessions in which academicians and practitioners in the field offered theoretical analyses, case studies and other perspectives on intercultural studies, civic engagement and related topics. The volume is divided into four sections: Theoretical Considerations of Intercultural Competence and Interculturalism; Intercultural Development and Assessment: Practical Examples and Research; Civic Engagement in International and Culturally Diverse Contexts; and Intercultural Education and Training.The reader will find that most of the papers address a variety of intercultural topics beyond their specific chapter designations. In particular, the theme of second language acquisition, education and use was an overarching theme that emerged from a large number of papers and presentations, specifically with regards to the complexities now faced by intercultural educators and researchers as a result of the increasing dominance of English as a "lingua franca" both in academe and many nations.