So earlier I was playing T.H.A.W. (story mode) and I was doing parkour and I stumbled upon something weird. First of all like Neversoft claimed (taken straight from the back of the box): "The first free-roaming tony hawk game. Skate L.A. as one massive streaming world." So of course it should be just one big world like the later tony hawk games are (at least that's what I heard for the next gen.) But like I said (and of course you probably already knew this) I "discovered" that neversoft lied about this.
As you can tell the levels aren't connected. As you go through a tunnel after a while it quickely loads the next area, so quick it's next to impossible to tell.