You can teleport to Mirror Dimension at the entrance to Jupiter Temple. You can get out through the teleporter in that little zone with NPCs(outside Mirror Dimension that place is close to Thunder Waterfall), that is also the place where you'll spawn when teleporting in. If you go to Jupiter Temple in the Mirror Dimension, you see a teleporter that can take you to Hall of Worship or Zealots' Hideout.
There is a level restriction. I don't know how high though. I'd say, maybe 105.