Krzysztof Walczak, Ph.D., and Rafał Wojciechowski, Ph.D., attended The 4th International Conference on Augmented Reality, Virtual Reality and Computer Graphics Salento AVR 2017 which took place in Ugento (Italy), June 12 – 15, 2017. Rafał Wojciechowski presented a paper entitled „Versatile Augmented Reality Scenes for Tangible Interaction in Real-World Environments”. Krzysztof Walczak presented two papers: „Semantics-Supported Collaborative Creation of Interactive 3D Content” (as author) and a paper entitled „Semantic Exploration of Distributed AR Services” (authors: Walczak, K., R. Wojciechowski, A. Wójtowicz), which was awarded The Best Paper Award.