Favorite off-beat leveling locations?

[Striiker]

I'm leveling up in City of Mist at the moment. It's an obviously overlooked zone. The XP is great and I love the place. I think this is suitable from 35 onwards? As it's overlooked, you may have some challenges getting a group if all you want to do is log on, set LFG and sit there. If you log on, set LFG and then start actively recruiting those who are LFG, you'll get a group rolling in no time.
A plus is that melee can be bound in the City of Mist.