White House located in the administrative territorial entity Washington, D.C.
The White House is the official residence and workplace of the president of the United States. It is located at 1600 Pennsylvania Avenue NW in Washington, D.C., and has been the residence of every U.S. president since John Adams in 1800 when the national capital was moved from Philadelphia to Washington, D.C. The term "White House" is often used as metonymy for the president and his advisers.
The residence was designed by Irish-born architect James Hoban in the neoclassical style. Hoban modelled the building on Leinster House in Dublin, a building which today houses the Oireachtas, the Irish legislature. Construction took place between 1792 and 1800, using Aquia Creek sandstone painted white. When Thomas Jefferson moved into the house in 1801, he and architect Benjamin Henry Latrobe added low colonnades on each wing to conceal what then were stables and storage. In 1814, during the War of 1812, the mansion was set ablaze by British forces in the Burning of Washington, destroying the interior and charring much of the exterior. Reconstruction began almost immediately, and President James Monroe moved into the partially reconstructed Executive Residence in October 1817. Exterior construction continued with the addition of the semi-circular South portico in 1824 and the North portico in 1829.
Because of crowding within the executive mansion itself, President Theodore Roosevelt had all work offices relocated to the newly constructed West Wing in 1901. Eight years later, in 1909, President William Howard Taft expanded the West Wing and created the first Oval Office, which was eventually moved as the section was expanded. In the main mansion (Executive Residence), the third floor attic was converted to living quarters in 1927 by augmenting the existing hip roof with long shed dormers. A newly constructed East Wing was used as a reception area for social events; Jefferson's colonnades connected the new wings. The East Wing alterations were completed in 1946, creating additional office space. By 1948, the residence's load-bearing walls and wood beams were found to be close to failure. Under Harry S. Truman, the interior rooms were completely dismantled and a new internal load-bearing steel frame was constructed inside the walls. On the exterior, the Truman Balcony was added. Once the structural work was completed, the interior rooms were rebuilt.
The present-day White House complex includes the Executive Residence, the West Wing, the East Wing, the Eisenhower Executive Office Building (the former State Department, which now houses offices for the president's staff and the vice president), and Blair House, a guest residence. The Executive Residence is made up of six stories: the Ground Floor, State Floor, Second Floor, and Third Floor, and a two-story basement. The property is a National Heritage Site owned by the National Park Service and is part of the President's Park. In 2007, it was ranked second on the American Institute of Architects list of "America's Favorite Architecture".Construction
Construction of the White House began at noon on October 13, 1792, with the laying of the cornerstone. The main residence and foundations of the house were built largely by both enslaved and free African-American laborers, and employed Europeans. Much of the other work on the house was done by immigrants, many of whom had not yet obtained citizenship, including the sandstone walls, which were erected by Scottish immigrants, the high-relief rose, and garland decorations above the north entrance and the fish scale pattern beneath the pediments of the window hoods. 
There are conflicting claims as to where the sandstone used in the construction of the White House originated. Some reports suggest sandstone from the Croatian island of Brač, specifically the Pučišća quarry whose stone was used to build the ancient Diocletian's Palace in Split, was used in the building's original construction. However, researchers believe limestone from the island was used in the 1902 renovations and not the original construction. Others suggest the original sandstone simply came from Aquia Creek in Stafford County, Virginia, since importation of the stone at the time would have proved too costly. The initial construction took place over a period of eight years at a reported cost of $232,371.83 (equivalent to $3,710,000 in 2021). Although not yet completed, the White House was ready for occupancy circa November 1, 1800.Due in part to material and labor shortages, Pierre Charles L'Enfant's plan for a grand palace was five times larger than the house that was eventually built. The finished structure contained only two main floors instead of the planned three, and a less costly brick served as a lining for the stone façades. When construction was finished, the porous sandstone walls were whitewashed with a mixture of lime, rice glue, casein, and lead, giving the house its familiar color and name.
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