Hi MartyC,
did you find a blind man sitting on a pillar? Nearby him there is a Teleporter. there're more of such Teleporters and they're are very handy to fast travel.
By a few Teleporters the Control Panel is stuck so you can only travel to 1 location. Other Teleporters you can change the destiny by using the Control Panel. It's worth the effort to write down notes about them or make a drawing. I used them maany times to fast travel from merchant to merchant when I go for shopping

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From the Teleporter by the man sitting on a pillar (Simeon) you can travel to Eagle's Nest ! and that's the location you must go to ! find there you way up (ladder) and be prepared, you must fight 2 NPC's there, but don't kill the other two because Beird and Abram are traders

If you find abram, look there and you can find some Levers !
This is the ONLY places you can SET OFF a few barriers that block you in Dragon form !! If you find later on more barriers (at the Harbour ...), those barriers can NEVER be set off, so don't search for more levers
As long as the barrieres are in tact and you try to fly through them, you gonna die ! And because of the barriere most of the time you can't do damage to towers/nests behind the barriere, that's normal !
A tip : later on, if you've trouble killing flying monsters that come out of nests or whatever ... try the Dragon skill Polymorph on them ! Very useful, if you ask me