Part I: General Aspects and Augmented Reality in the Tourism Industry.- Informal Learning with Extended Reality Environments: Current Trends in Museums, Heritage and Tourism.- Collaborative Augmented Reality for Cultural Heritage, Tourist Sites and Museums: Sharing Visitors' Experiences and Interactions.- Augmented Reality Systems and their Future in Tourism: Before, During and After the Journey.- Augmented Reality and Intelligent Packaging for Smart Tourism: A Systematic Review and Analysis.- The New Normal Tourism in Indonesia: The Expansion of the Wonosari AR Project to Enhance Holiday Experience.- Augmented Reality in Spain: Heritage Education, Cultural Tourism and Museums.- Part II: Augmented Reality for Museums.- Immersive Installations in Museum Spaces: Staging the Past.- The Use of Augmented Reality to Expand the Experience of Museum Visitors.- Gestures and Re-enactments in a Hybrid Museum of Archaeology: Animating Ancient Life.- Supporting Spontaneous Museum Visits by Deaf People: An Augmented Reality Application and a Case Study.- Ensuring Resilience Using Augmented Reality: How Museums Can Respond During and Post COVID-19?.- Part III: Augmented Reality and Cultural Heritage.- Augmented Reality and New Opportunities for Cultural Heritage.- User Experience and Engagement in Augmented Reality Systems for the Cultural Heritage Domain.- The Transhuman Docent: Persistent Human Interaction in Digital Heritage Sites.- Literature-Based Augmented Reality: Integrating Urban Novels with Context-Aware Augmented Environments.- Applying Augmented Reality in the Italian Food and Dining Industry: Cultural Heritage Perspectives.- Reintroducing Indonesian Folk Songs to Children Using Augmented Reality Books.- Concluding Remarks