Magic barriers or NPCs may prevent low-level characters from accessing some dungeons.
There are also several places, that may be accessed only once, during some quest.

	Location	Island	Level
	Demon Nest	Ashmor	60
	Abyssons Room	Ashmor	60
	Ninjana	Banuna	60
	Wisp Island (s4ep4)	Fabulara	60
	Flaroxis / Floraxis	Banuna	55
	Black Belt quest	Yabutu	50
	Ninjaman Cave	Yabutu	50
	"Help" House	Yabutu	45
	Dragon Island	St.Nivalis	40
	Long Place	Yabutu	40
	Greezo Dungeon	Ashmor	40
	Oculus Cave	Ashmor	40
	Vargos	Vargos	40
	Beholder Cave	Ashmor	25
	Labyrinths (Vampires)	Solahmar	20
	Room with an Eye	Aurea	15
	Room with an Eye	Aurea	Gorak quest
	Saepira	Saepira	quest
	Hieronymus Room	Vargos	quest
	Linc Room	Ashmor	s5ep2
	Taro (in "Help" House)	Yabutu	quest
	Black Belt quest	Yabutu	s6ep2