Labels on this plan, as written: Tunnels; L5 L6; B Bathrooms L4; E L7; L3 S; S Stairwell; L8; E Elevator L2; L9; X Airduct Entrance L10; L1; Gift Shop L11; S L12; Main Desk S E Coffee; Shop; S L13; Bar X; Lounge L14; L24; L15; L16; L23; L17; Main Lobby L22 S; Lower Level E; L18; L21.