man dont want much do ya
up to lvl 15
The undead fort near hebian, its in the forest behind the lifestone on the way from shousi. Ask at hebs lifestone someone will know were it is.
lvl 15 up to 30
Citadel dungeon near Qualaba'r if your going mage this can be tuff but well worth the experience.
lvl 30 up to 70
Tusker dungeon BSD black spawn den
Major dungeon this dont go outside untill your at least lvl 50 as mobs often camp the portal waiting for you to come out.
and if you just want to relax and get decent xp and loot after lvl 40 hit the walled portals near Baishi.
The first one is good long as you have a good jump skill or you wont ever get on the wall, the no casting mobs cannot get to you so you can just farm them all day using life drain and war magic.
Even better if your a life spec archer.
lvl 70+
Aerlinthe
Death island even for lvl 126 major mobs here and home of the balrog.
there are tones of places you can go to, lvl 15 is the turning point for most players and if your an OG mage lvl 26 as this is when you can cast lvl 6 magic i.e. your god.
also at lvl 30 try magma dungeons for motes.
www.thejackcat.com
has loads of info as to were you can find these areas.