Great Wall of Fun!

 Yes. It's a wee bit chilly way up here.

 Saw this graffiti on a barrier to the stairway entrance...

 Hi.

 Lookin' out and down.

"No Admittance"....my ass.

 It's just a wall.

 Trav and Angela (our awesome guide)...found a dog.

 Amazing.

 Forehead in the way of history.

 I stand here triumphant.....actually...hypoxic.

 "Put down the camera and throw me a rope!"

 "Hey!  Sir!  One dollar!"