winterfest 2010 Treasure Hunt

Sometimes you gotta get Below in a hurry

In China Moon, Catherine races with Henry to an entrance,
 pointing the way on the run.

Catherine & Henry racing around a street corner.

Catherine opening the doors and showing Henry the ladder below.

Do you recall the address for this doorway?

(Hint) Catherine asked Henry if he could get uptown. 
She said she'd meet him at ___________.

Was it