Had a question. I have 11:00am tickets this Friday to see the 911 memorial. Husband and I wanted to take the subway down by battery park and walk around and make our way "up" to the memorial site. Where would be the best place to exit the subway? We are staying on 37th street by empire state building. Hopstop shows us taking the R train from 34 st to the State Street exit? Thanks. Also, how far a walk from this point to the memorial? just to get an idea. thanks!