The document discusses the Travel in Europe (TiE) project, which aims to promote European cultural heritage through an online virtual world game. The game allows high school students to virtually travel around Europe, visiting 3D reconstructed cities and engaging in mini-games about local art and history. These mini-games incorporate constructivist learning approaches and can be created by both experts and users. Players can also interact with conversational virtual humans to learn more about the environments. The project is currently in development, with content collection and an initial demo completed.