Inco Superstack vs White House

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The Inco Superstack in Sudbury, Ontario, with a height of 381 metres (1,250 ft), is the tallest chimney in Canada and the Western hemisphere, and the 2nd tallest freestanding chimney in the world after the GRES-2 Power Station in Kazakhstan. It's also the second tallest freestanding structure of any kind in Canada, behind the CN Tower but forward of First Canadian Place. It's the 40th tallest freestanding structure in the world. The Superstack is situated on top of the biggest nickel smelting operation in the world at Vale's Copper Cliff processing centre in the city of Greater Sudbury.

In 2018, Vale declared that the stack will be decommissioned and dismantled beginning in 2020. On July 28, 2020, Vale declared that the stack had been officially taken out of service, but would remain operational in standby mode for two more months as a backup in case of a malfunction in the new system, after which the dismantling of this Superstack will begin. In addition to further reducing sulfur dioxide emissions by 85 percent, the decommissioning of the pile is expected to cut the complex's natural gas consumption in half.

Source: Wikipedia

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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 home of each U.S. president since John Adams in 1800. The term 'White House' is often used as a metonym for the president and his advisers. The home was designed by Irish-born architect James Hoban in the neoclassical style. Hoban modelled the construction on Leinster House in Dublin, a building which 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 home in 1801, he (with architect Benjamin Henry Latrobe) added reduced colonnades on each wing which concealed stables and storage. In 1814, during the War of 1812, the mansion had been set ablaze by the British Army in the Burning of Washington, destroying the interior and charring a lot of the exterior. Reconstruction began almost immediately, and President James Monroe moved into the partially rebuilt Executive Residence in October 1817. Exterior building continued with the inclusion of the semi-circular South portico in 1824 and the North portico in 1829. Because of crowding inside the executive order , President Theodore Roosevelt had work offices relocated to the newly constructed West Wing in 1901. Eight years later in 1909, President William Howard Taft enlarged the West Wing and created the first Oval Office, which was finally moved as the section was expanded. In the main mansion, the third-floor attic was converted into living quarters in 1927 by augmenting the present hip roof with long shed dormers. A newly constructed East Wing was used as a reception area for social occasions; Jefferson's colonnades connected the new wings. East Wing alterations were completed in 1946, creating additional office space. By 1948, the residence's load-bearing exterior walls and internal wood beams were found to be close to collapse. Under Harry S. Truman, the interior chambers were completely dismantled and a new internal load-bearing steel frame constructed within the walls. Once this work was completed, the interior rooms were rebuilt. The modern-day White House complex involves the Executive Residence, West Wing, 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, as well as 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'.

Source: Wikipedia