Yeah, there are a LOT of nice places you can't see in Ae'Gura. Most of the time, they are unfinished, but they are still worth a shot.
Better than flymode, I'd suggest installing Chacal's awesome challenge
. It opens a lot of nice places in the city. Not all of them, but it lets you walk through most gates without the need of flymode.
(This bridge isn't included, though).