White House Office of the President the United States, located in downtown Washington, Pennsylvania Avenue, an area of 18 acres, because of its white sand rock wall, they are named. The White House is divided into two main building and east-west Ji, Ji-dong for visitors (open every Tuesday to Saturday), Ji is the West regional office, the president's Oval Office is located inside the West Ji. Diplomatic reception of the Main Building ground floor lobby, outside the South Lawn, guests visiting the general welcome ceremony held here. Two-story main building is the residence of the President of the family. The main building there are a library, map room, gold, silver, porcelain showroom, which quite good collection. In addition, the east side of the White House of "Mrs. Kennedy Garden", the west side of the "Rose Garden."