Thank you all for a very usefull comments. I will surely add more details but I have to make stable construction first.
Bupaje, this game will have a lots of details like you mentioned, for kids to explore worlds. This level is only "level select" but still there will be a lots of options to discover, like climb onto the walls, go up to the guards place etc.
I like idea to make colored sun and lance effect
Also I wanted to avoid to much details because those teleporters are very eye-catching because of great particle effect going around telep. all the time, plus fluctuating colored light so it is completely different feal when you walk around. But as I say I will ad details on the hills like trees and inside I have a lots of models like barels, boxes, some nice signs, it will be nice