When you get to the Chatelet-Les Halles RER station, follow signs for Forum Les Halles (which is a large, mostly underground shopping mall), or signs for St. Eustache. Hold on to your ticket, because you will probably need it to get out of the station -- put it into the slot, then remove it and the gate will open (or release so that it opens when you push it). To get to street level you will probably need to go up two escalators, and then should be looking at the above scene. Go ahead, then look to the left as Mom's pointing...

When you get to the Chatelet-Les Halles RER station, follow signs for Forum Les Halles (which is a large, mostly underground shopping mall), or signs for St. Eustache. Hold on to your ticket, because you will probably need it to get out of the station -- put it into the slot, then remove it and the gate will open (or release so that it opens when you push it). To get to street level you will probably need to go up two escalators, and then should be looking at the above scene. Go ahead, then look to the left as Mom's pointing...