There are so many beautiful sights to see in the Guild Wars campaigns.... It is something I doubt most PvPers would ever be able to appreciate.... but it is something that I, as one of those crazy Grandmaster Cartographer types.... know fairly well.
For instance...
Jahtenda Bog... Not one that has been mentioned here yet... but I have a strange appreciation for the various trees of the swamp. They have a strangely sleepy beauty to them.
The strangely crooked trees around my Guild Hall are interesting. You know by looking at them that they'd make great bonsai if they were a little smaller...
Much as Gaile mentioned herself... the cherry blossom trees around Shing Jea Monastary have a particular beauty to them. I selected an isolated one next to a cliff to screenshot... but there are plenty of others, both pink and white... and they really add character to the place. ^_^
The decorated acacias of Marga Coast.... I've long had my attention drawn to these in passing.... and not just the ones with strange cloths hanging from them either... The trees are quite fascinating.
And.... Drazach Thicket.
Drazach Thicket is love.
I still consider it possibly the most beautiful explorable area in the entire game.
Extra points also go to the Shiverpeaks... Jaia Bluffs (northern Shing Jea)... the Henge of Denravi and Nightfallen Jahai. I'll get pictures of Nightfallen Jahai's tree-"life" when I can actually sum up the willpower to fight all the way to the best spot....