Here is a list of all the new zones in the continent of Northrend introduced in Wrath of the Lich King. Credit goes to MMOC and WoWwiki for a lot of this information.
- Borean Tundra
- Howling Fjord
- Dragonblight
- Grizzly Hills
- Sholazar Basin
- Crystalsong Forest
- Dalaran
- Storm Peaks
- Icecrown
- Zul’Drak
[...] Northrend Zones [...]