Tel'aran'rhiod (tel-AYE-rahn-rhee-ODD) or the World of Dreams is a fictional reality where the reality is mutable, mentioned in the fictional world of Robert Jordan's fantasy series The Wheel of Time. The word itself is from the in-universe language known as the Old Tongue, literally meaning 'the unseen world'. In Tel'aran\'rhiod dreamers are self-aware, and environments are malleable, depending on the awareness of the dreamers. Additionally, the perception of time in Tel'aran'rhiod is different from the awaking world.

Read more about Tel'aran'rhiod:  Characteristics, Dreamwalking, Traveling

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Tel'aran'rhiod - Traveling
... It is also possible to enter Tel'aran'rhiod "in the flesh," by Travelling there ... Contrarily, those fully in Tel'aran'rhiod appear to experience a massive increase in control over the dream ... When Ishamael entered Tel'aran'rhiod in the flesh in The Dragon Reborn, he was capable of extraordinary feats, such as gravity manipulation and even unravelling reality ...