Kalimdor:
Teldrassil (40,30), North-west, at the Oracle Glade (lvl 1-10)
Moonglade (58,76) South, by the Great Cat Spirit (lvl... err, no enemies anyway)
Darkshore (45,76) South, at Grove of the Ancients (lvl 10-20)
********* (26,14) North, near Orendil's Retreat (lvl 20-25)
********* (93,42)** Far East, at Bough Shadow (lvl 20-25)
Feralas (49,11)** North, by Jademir Lake (lvl 35-40)
Un'Goro Crater (28,52) West, at Golakka Hot Springs (lvl 50-55)
Mount Hyjal (61,27)** North, at Nordrassil (lvl 80-82)
Eastern Kingdoms:
Tirisfal Glades (18,68) West, Whispering Forest in mountains. (Inaccessible on foot or in ghost form) (lvl 1-10)
Duskwood (45,44)** Middle, in Twilight Grove (lvl 20-25)
Hinterlands (60,28)** North, at Seradane (lvl 30-35)
Blasted Lands (35,72) South-West, in The Tainted Forest (lvl 54-60)
Northrend:
Grizzly Hills (45,38)** Middle, by Grizzlemaw (lvl 73-75)
Sholazar Basin (38,28) North-West, near The Savage Thicket (lvl 76-78)
Pandaria:
The Jade Forest (40,55) Middle, West of Serpent's Heart (lvl 85-86)
Valley of the Four Winds (19,33) North-West, at Paoquan Hollow (lvl 86-87)
Broken Isles:
Val'sharah (55,85), South, at Lunarwing Shallows (lvl 100-110)
** Near a portal to Emerald Dreamway (Where level 100+ druids can go with Dreamwalk, which replaces Teleport: Moonglade.)
There are no locations in Outland or Draenor.
I wrote the levels of the areas you can end up in, but I am pretty sure that alliance druids won't be taken to Tirisfal Glades until high level, while horde druids won't be taken to Teldrassil.
