Maybe they have found a way to reinforce the top structure enough to allow that much open space. Surely they have done some serious structural analysis on the thing.
The theory of evolution is just as stupid as the theories of gravity and electromagnetism.
So its glass pretty much goes all the way around, but you have a roof unit that raises up that looks like it goes up around 3-4 foot, but disappears into nothing when lowered. Either they have Chris Angel on staff or the side of the top unit are some sort of cloth material. Which I can't see lasting very long with the sun beating on, and getting lower up and down. Anyway it looks neat, but I can't see how the thing would be applicable or safe. Looks more like a maintance nightmare.
Yeah, I had the same reaction initially - but I think that the supports for the pop-top go down into the pillars that interrupt the windows. That said, the whole pop-top setup looks too flimsy to work in reality.
