The Fog around Twisted Treeline is thick enough that it removes the maps outer beauty.
Personally, looking at the edges of this map, it looks so nice, from spectator mode.
In game however, the fog is thick on the edges of map, moving close to the edges doesn't reveal it either, instead hiding the beauty that is Twisted Treeline.
Especially if you are in a mildly lit room / not the best monitor, its further removed from the view.