Add more embelissements like:
-Flags
-Plants
-Animals
Make it look more lively
Also you could add more detail in the buildings, like put a different one in it, to give it more accent.. I'm sorry if my english is bad.
I was looking at RhineGold and especially the Tower of Babylon is amazing.
The Vandhaal added many small details in the tower, it changes the whole view.
Why don't you look at it to and try something new.
Stuff like statues coming out of the wall or the famous battle walls when you see 2 sides clashing. So many statues in detail. Like a melagius statue and a nemean lion statue, showing heracles fighting the lion. Or Oddyseus fighting a Cyclops.
Do some research on historical buildings, look at their details and try to add it to your building or try something new, like Hey let's use a shrine roof or the tower of a counter barracks. The top of a monument or the hands of a monument.