Hoover Dam Dedicated by President Roosevelt

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• Architecture09/15/2026@BuildDesk

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  Starts 10/28/1886CONFIRMED86% CONFIDENCE139.9 years agoHappened as dated, per the source^[1]: "on October 28, 1886, President Grover Cleveland oversaw the dedication of the Statue of Liberty".

  President Grover Cleveland dedicates Frédéric Bartholdi's monumental copper figure on Bedloe's Island, capping a decade of Franco-American fundraising and engineering.

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• Infrastructure09/14/2026@BuildDesk

  Gross Dam Raise Tops Out at 470 Feet

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  Starts 06/03/2026CONFIRMED86% CONFIDENCE112 days agoHappened as dated, per the source^[1]: "workers placed the final load of roller-compacted concrete on the top of the dam, bringing Gross Dam to a height of 470 feet."

  Denver Water finished raising Colorado's Gross Dam by 131 feet, topping out the concrete work that will nearly triple the reservoir's storage capacity.

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  Klamath River Dams Fully Removed

  Iron Gate Dam, Siskiyou County, California, United StatesKlamath River Renewal Corporation

  

  Starts 10/02/2024CONFIRMED90% CONFIDENCE2.0 years agoHappened as dated, per the source^[1]: "The Klamath River restoration project completed the final work to remove the dams from the river".

  Crews finished dismantling all four hydroelectric dams on the Klamath River in 2024, the largest dam-removal and river-restoration project in US history.

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• Geopolitics09/21/2026@PoliticsDesk

  Nixon Becomes the First US President to Visit China

  Great Hall of the People, Beijing, ChinaMinistry of Foreign Affairs of the People's Republic of China

  

  02/21/1972 - 02/28/1972CONFIRMED82% CONFIDENCE54.6 years agoThe Office of the Historian states that "Nixon travelled to Communist China February 21–28, 1972, becoming the first U.S. President to visit mainland China while in office", and the Shanghai Communiqué itself records the visit as running "from February 21 to February 28, 1972".^[1]

  Richard Nixon spent 21 to 28 February 1972 in Beijing, Hangzhou and Shanghai, meeting Mao Zedong on the day he arrived. No sitting US president had set foot in the People's Republic, and the two governments had had no diplomatic relations for 23 years.

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• Infrastructure09/20/2026@BuildDesk

  DC Water Launches the Boring Machine Mary Under the Potomac

  West Potomac Park, Ohio Drive SW, Washington, D.C. 20024, United StatesDistrict of Columbia Water and Sewer Authority

  

  Starts 04/10/2026CONFIRMED90% CONFIDENCE166 days agoDC Water's^[1] own release of April 10, 2026 announces the launch as having happened that day.

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• Architecture09/20/2026@BuildDesk

  The Obama Presidential Center Opens to the Public

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  Starts 06/19/2026CONFIRMED82% CONFIDENCE96 days agoThe Obama^[1] Foundation's grand opening FAQ says "the public will be able to start visiting the campus and Museum on June 19, 2026", a fixed day that has now passed.

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• Infrastructure09/15/2026@BuildDesk

  Austerlitz Basin Opens to Clean Up the Seine for the Olympics

  Gare d'Austerlitz, Paris 13e Arrondissement, Paris, FranceCity of Paris

  

  Starts 05/02/2024CONFIRMED89% CONFIDENCE2.4 years agoHappened as dated, per the source^[1]: "the basin was inaugurated on May 2, 2024."

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• Geopolitics09/21/2026@PoliticsDesk

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  South Lawn, The White House, Washington, DC, United StatesThe White House

  

  Starts 01/29/1979 3:12PMCONFIRMED83% CONFIDENCE47.7 years agoThe American Presidency Project's note on the remarks states that "the President spoke at 10:12 a.m. on the South Lawn of the White House" on 29 January 1979; 10:12 a.m. EST is 15:12Z.^[1]

  Four weeks after relations began, Deng Xiaoping stood on the South Lawn for a full arrival ceremony — the first visit to Washington by a leader of Communist China. He went on to charm Congress and the press, and to be photographed in a ten-gallon hat at a Texas rodeo.

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• Energy09/22/2026@EnergyDesk

  EBRD-backed remediation of Kyrgyzstan's Mailuu-Suu tailings dam

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  Embassy of the United States, Liangmaqiao Road, Chaoyang, Beijing, ChinaUS Department of State

  

  Starts 01/01/1979CONFIRMED82% CONFIDENCE47.7 years agoThe Office of the Historian states that "the Joint Communiqué stated that the United States would begin official diplomatic relations with the People's Republic of China on January 1, 1979, and that the two countries would open Embassies on March 1". The agreement itself was announced on 15 December 1978.^[1]

  From 1 January 1979 Washington recognised the People's Republic as the sole legal government of China and withdrew recognition from Taipei, ending thirty years in which the United States had treated the Republic of China on Taiwan as the government of all China.

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• Architecture09/15/2026@BuildDesk

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  220 South State Street, Loop, Chicago, Illinois, United StatesGeneral Services Administration

  

  Starts 08/02/2024CONFIRMED90% CONFIDENCE2.1 years agoHappened as dated, per the source^[1]: the GSA released its final environmental review, "ultimately choosing to reuse the vacant buildings rather than demolish them," reported August 2, 2024.

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• Infrastructure09/15/2026@BuildDesk

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  Río Indio, Capira, Panamá Oeste, PanamaPanama Canal Authority

  

  Starts 06/30/2024CONFIRMED89% CONFIDENCE2.2 years agoHappened as dated, per the source^[1]: "In 2024, a Supreme Court ruling overturned a law that had blocked the creation of the Indio River reservoir."

  Panama's Supreme Court overturned a 2006 law blocking new reservoirs, clearing the way for a dam on the Rio Indio meant to secure the Panama Canal's water supply against worsening droughts.

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