Check out my 5th Edition Blog.
See Sharn: City of Towers for more details.
How much of Sharn Floats?
Most of the towers are on the ground, only requiring Sharn's manifest zone to stay high.
Aiming for slightly more info ;)
If the floating effect could be stopped, I guess a lot of towers would collapse, because they're sort of anchored to the air.
This on the other hand- makes you understand why fantasy and fantastic are so similar.
That picture is gorgeous - wherever did you get it?
I prefer this look of Sharn