sentences:  Later presidents expanded the greenhouse, until it occupied most of what is now the West Wing.Grant built a billiards room atop and to the south of the breezeway leading from the west end of the Ground Floor of the White House, but this became a Palm Court in 1877 during the Rutherford B. Hayes administration.Hayes authorized new doors cut through the stone of the mansion's walls to provide access between the Palm Court and State Dining Room.