This volume brings together significant theoretical and empirical approaches concerning both sustainability in tourism and in monitoring the sustainable tourism of seaside destinations. It explores the monitoring of the harmonious tourism development on the Bulgarian Black Sea coast in the regions of Dobrich, Varna and Bourgas. The book presents a systematic and on-going process of gathering and interpreting data, integrated in the management of tourist sites, which is necessary and useful to make an objective assessment of the sustainable development of the destinations. The volume will be of interest to educators, researchers, students, tourism strategists, policymakers, and planners, as well as practitioners in the field of sustainable tourism and destination management.