Figure 1: 360TourGuiding concept: a tour guiding trainee can view and practice tour guiding with 360 travel videos in VR.Other people can remotely join into the training session as audiences or acting tourist using their mobile device (e.g., tablet) or personal computer (e.g., laptop), which can capture their facial video streams using the built-in front facing camera. The audiences' facial video streams are displayed on corresponding 3D avatars in the VR environment