These are a few area's in WoW that i have found that you have access to on private servers using the .tele / .go / .goxyz or what ever your tele command happens to be.
(i'm sure this has been posted before but i have not seen it)
two islands south of tanaris
map: 1
X: -11801.362305
Y: -4745.939941
Z: 4.980925
orientation: 0.129578
ahn'qiraj arena
map: 1
X: -8517.935547
Y: 2016.300415
Z: 104.749268
orientation: 3.509169
hyjal
map: 1
X: 5491.006836
Y: -3734.210205
Z: 1593.489990
orientation: 2.832905
old ironforge
map: 0
X: -4815.729492
Y: -970.943970
Z: 464.708679
orientation: 3.835891
ironforge airport
map: 0
X: -4802.238281
Y: -1669.004883
Z: 504.662109
orientation: 5.752244
ironforge farm
map: 0
X: -4081.6599
Y: -1263.409058
Z: 146.822159
orientation: 5.541759
morgan's plot start
map: 0
X: -11068.300781
Y: -1820.820190
Z: 57.992542
orientation: 1.745155
morgan's plot end
map: 0
X: -11220.814453
Y: -1462.594482
Z: 3.243015
orientation: 4.673117
(i just added all the cord info i needed to get to these places if you need any other info just let me know)
i use morgan's plot for pvp events considering that there is no way in or out and when you die you have to rez outside of kara so i can tell who the real winner is.
please feel free to add more places i just put my favorites down enjoy.