Lively and engaging articles from the lecturers and the participants of the 16th Gokova Geometry-Topology Conference, held on the shores of Gokova Bay, Turkey, in May of 2009. Among the articles in this volume are a self-contained account of integrable systems, a survey on group actions, and research articles on deformation theory, 4-manifolds and symplectic topology (e.g., a construction of a non-Kahler Calabi-Yau manifold). Includes two pages of color photographs.