Here's my illustrated guide to the Teleportation Locations across the spiral!
You will find these teleporters in most non-instanced zones in every world of the Spiral except for Wizard City and Krokotopia. To work a teleporter you must first travel to the stone/tablet/machine (or simply "stones" for short) that the teleporter will port you to and then activate it. Once a stone has been activated, you then may travel freely back and forth between the teleporter central location and the stone that it leads to.
Questers may find it valuable to run through a world first to unlock the teleport stones before questing in a new zone. Having the teleport stones unlocked will allow for faster questing in the end.
Dragonspyre Teleporter Locations
Plaza of Conquests
The Grand Chasm
The Crystal Grove
Mooshu Teleporter Locations
Cave of Solitude
Village of Sorrow
Ancient Burial Grounds
Marleybone Teleporter Locations
Grizzleheim Teleporter Locations
Thanks for reading, and I hope these maps help you throughout your journeys in the spiral!