there are many famous rooms in the white house. the entrance hall is the primary and formal entrance. it is located on the state floor, and is entered from pennsylvania avenue. it opens to the grand staircase, which connects the state floor to the second floor of the building. there are three state parlors on the state floor of the white house: the green room, the blue room, and the red room. they are each decorated in shades of their respective color and have been used for small reception, parties, and teas