I just followed the pointer on my HUD obsessively through the tunnels until I came up from one station and ran into a Brotherhood of Steel patrol fighting some Super Mutants. Once the Mutants are dead, you can go up to the patrol; they're en route to GNR to relieve it from an attack, and will let you accompany them to the tower. Follow them closely or you're bound to get lost.fish food carl said:Well, I'm stuck. I set off on a proud journey to the GNR building, with Jericho for some backup, and I've been walking for hours. I went through all of the subway tunnels and resurfaced just North of my destination, Friendship Station. I tried to walk south. It was blocked off. I tried to walk West, then into the thing. I've circled the entire perimeter, and the whole thing has got conveniently placed walls of rubble. I didn't expect this difficulty, but I've still got about 17 Stimpacks and a decent amount of ammo. How in the name of The Holy Pancake can I get there? Have I missed something? I've been probing all around the surface and there's no way in. I've been along all of the subway tunnels, but none of them lead up to the surface.
Once the area around the tower has been cleared of Super Mutants you'll find the front door to the tower remains locked against the attack, but there's an intercom to the right of the door you can use to ask to be let in.
-- Steve
edited to add: the Fallout Wiki says the station I left was Chevy Chase.