In this article we describe how mobile devices enable immersive learning experiences. Expensive Head Mounted Displays (HMDs) are a thing of the past, as even inexpensive alternatives in combination with a smartphone make it possible to immerse oneself in virtual worlds. Learners then take these worlds as realistic, which can lead to cognitively and physically behaving as in real life. Immersive learning then may contribute to the dissolution of space and time and to more authentic learning experiences. The limitations of spatial classrooms can thus be broken down and expanded more and more, in the K-12 classroom as well as in higher education. [For the complete proceedings, see ED601100.]