Architecture09/20/2026@BuildDesk
Kartavya Bhavan 1 and 2 Open in Delhi's New Central Secretariat
Kartavya Path, New Delhi, IndiaCentral Public Works Department
Starts 02/13/2026CONFIRMED 90% CONFIDENCE222 days agoThe article states "Kartavya Bhavan 1 and 2, along with Seva Teerth were inaugurated on 13 February 2026."^[1]
Two more of the ten Common Central Secretariat blocks on Kartavya Path, along with the Seva Teerth complex, were inaugurated, taking to three the number of buildings in service in the Central Vista's replacement for Shastri, Nirman and Krishi Bhawan. The first three blocks, designed by HCP and built by Shapoorji Pallonji, cost 3,690 crore rupees and each spans about 150,000 sq m over seven floors and two basements.
0.66
Architecture09/14/2026@BuildDesk
Palace of Westminster Restoration Phase One
Palace of Westminster, London, United Kingdom
Starts 12/31/2032ESTIMATED 68% CONFIDENCEin 6.3 yearsA target, per the source^[1]: the preliminary phase is recommended to run "to 2032", pending a final delivery decision by 2030.
A £3BN, seven-year preliminary phase to repair the crumbling Palace of Westminster, before Parliament chooses between fully vacating the building or working around it.
£3B
0.63
Transport09/15/2026@BuildDesk
Construction Begins on New York's Hudson River Rail Tunnel
North River Tunnel, Weehawken, New Jersey
Starts 11/03/2023CONFIRMED 89% CONFIDENCE2.9 years agoHappened as dated, per the source^[1]: "construction finally began Nov. 3 on the Hudson River Tunnel portion of the Gateway Program^[2]".
Crews broke ground on the Hudson Tunnel Project, a new rail tunnel meant to relieve the century-old, storm-damaged North River Tunnel beneath the Hudson River.
0.61
Transport09/15/2026@BuildDesk
Silvertown Tunnel Opens Under the Thames
Silvertown, London Borough of Newham, London, United KingdomTransport for London
Starts 04/07/2025CONFIRMED 90% CONFIDENCE1.5 years agoHappened as dated, per the source^[1]: "The Silvertown Tunnel will open on 7 April 2025, as confirmed by TfL^[2]."
Transport for London opened the Silvertown Tunnel, a new road crossing under the Thames built to relieve the perennially congested Blackwall Tunnel a few hundred metres away.
$2.8B
0.60
Architecture09/15/2026@BuildDesk
The Washington Monument Opens to the Public
Washington Monument, Washington, D.C., United StatesUnited States Army Corps of Engineers
Starts 10/09/1888CONFIRMED 84% CONFIDENCE138.0 years agoHappened as dated, per the source^[1]: "opened to the public in Washington, D.C., on this day in history, Oct. 9, 1888".
After decades of stalled funding and a visible change in stone partway up its shaft, the Washington Monument finally opened its doors to visitors in 1888.
0.60
Automotive09/15/2026@BuildDesk
Ford Starts the First Moving Assembly Line for a Complete Automobile
Highland Park Ford Plant, Highland Park, Michigan, USAFord…
Starts 12/01/1913CONFIRMED 87% CONFIDENCE112.8 years agoConfirmed per History.com^[3]'s "Ford's^[2] assembly line starts rolling" entry, which dates the first complete-automobile moving assembly line to December 1, 1913 at Ford's Highland Park plant.
On December 1, 1913, Ford Motor Company extended its moving line at the Highland Park plant to assemble a complete Model T chassis start to finish, cutting build time from over 12 hours to about 93 minutes.
0.60
Transport09/14/2026@BuildDesk
All 41 Workers Freed After Silkyara Tunnel Collapse
Silkyara, Uttarkashi, Uttarakhand, India
Starts 11/28/2023CONFIRMED 89% CONFIDENCE2.8 years agoHappened as dated, per the source^[1]: "the rescue team finally managed to break through the 60-meter blockage and free all the 41 workers."
Rescuers freed all 41 workers trapped for 17 days after a Himalayan highway tunnel collapsed in Uttarakhand, India, in one of the largest tunnel rescue operations on record.
0.59
Transport09/15/2026@BuildDesk
Sir William Arrol & Co.’s Forth Bridge Opens as the World’s Longest Cantilever Span
Firth of Forth, South Queensferry, Scotland, United KingdomSir William Arrol & Co.
Starts 03/04/1890CONFIRMED 87% CONFIDENCE136.6 years agoNetwork Rail^[3] confirms the Prince of Wales formally opened the Forth Bridge on 4 March 1890.
The Forth Bridge, a railway cantilever spanning the Firth of Forth in Scotland, was formally opened by the Prince of Wales on 4 March 1890, some months after the structure itself was finished in November 1889. Designed by John Fowler and Benjamin Baker and built by Sir William Arrol & Co., it was Britain's first major all-steel structure and the world's longest cantilever bridge span.
0.59
Transport09/15/2026@BuildDesk
Hong Kong Opens the Sha Tin to Central Link's Cross-Harbour Extension
Exhibition Centre Station, Wan Chai North, Hong KongMTR Corporation
Starts 05/15/2022CONFIRMED 90% CONFIDENCE4.4 years agoHappened as dated, per the source^[1]: the cross-harbour section was set to "fully open on May 15," reported days ahead of the 2022 launch.
Hong Kong's MTR opened the cross-harbour section of the Sha Tin to Central Link, an immersed-tube rail tunnel under Victoria Harbour that gave Hong Kong Island a fourth rail link to Kowloon.
$11.6B
0.59
Infrastructure09/14/2026@BuildDesk
Jakarta Sets September 2026 Groundbreaking for Its Giant Sea Wall
Jakarta Bay, Jakarta, Indonesia
Starts 09/30/2026ESTIMATED 70% CONFIDENCEin 7 daysEstimated: the January target was September 2026, but on 3 September 2026 CNN Indonesia^[2] reported Governor Pramono is "menunggu arahan dari pemerintah pusat" (awaiting the central government's direction) rather than confirming it, and on 20 August he said "Ini kan pemerintah pusat. Kita menunggu saja" when asked if it would go ahead in September.
Jakarta's government targeted September 2026 to break ground on its 19km stretch of a hybrid concrete-and-mangrove sea wall, part of a revised, roughly 500km national coastal defence plan that has replaced the earlier Garuda-shaped bird design.
0.59
Transport09/20/2026@BuildDesk
Delhi Metro's Golden Line Opens Its First Section, Tughlakabad to Sangam Vihar
Tughlakabad, New Delhi, IndiaDelhi Metro Rail Corporation
Starts 12/31/2026DELAYED2 years late61% CONFIDENCEin 99 daysConstruction World^[2], 16 September 2026, narrows the year to a month: DMRC is "targeting December 2026 for the opening of the first operational section of the Golden Line between Tughlaqabad and Sangam Vihar. The 8.4-km stretch is planned as the initial section". December is the last month of the year the pin already sat on, so the day stands at 31 December 2026 - now as the end of a named month rather than a bare year. The full Aerocity-Tughlakabad corridor follows later.
The first 8.4 km section of the Phase 4 Golden Line, from Tughlakabad to Sangam Vihar, is targeted to open in December 2026; the rest of the 29.785 km Delhi Aerocity-Tughlakabad corridor, 19 stations with 12 of them underground, follows in phases. By April 2026 civil work was 78 per cent done with five tunnel boring machines still at work, and trainsets had begun arriving at the modified Sarita Vihar depot.
0.59
Transport09/15/2026@BuildDesk
The Channel Tunnel Opens
Channel Tunnel, Folkestone, United Kingdom
Starts 05/06/1994CONFIRMED 78% CONFIDENCE32.4 years agoHappened as dated, per the source^[1]: the tunnel "was officially opened on May 6, 1994," presided over by Queen Elizabeth II and President Mitterrand.
The $15BN Channel Tunnel opened, linking Britain to mainland Europe by rail for the first time since the last Ice Age, after six years of construction under the English Channel.
$15B
0.59

Happened as dated, per the source^[1]: "controlled explosives use and rock removal activities" began in front of Centre Block on Parliament Hill on July 30, 2020.

Start: Jul 30, 202090% CONFIDENCEfrom the source

Parliament Hill's Centre Block excavation begins

Crews began blasting a 23-metre-deep pit in front of Canada's Centre Block to make way for a new underground Welcome Centre and earthquake base isolation system.

Public Services and Procurement Canada announced (29 July 2020) that controlled explosives and rock removal would begin on 30 July 2020 in front of Centre Block on Parliament Hill, Ottawa^[2][3]
The blasting is part of excavation for phase 2 of the Parliamentary Welcome Centre, on weekdays during daylight hours, with horn signals (three short, a minute of silence, a short one then the blast, one long) and possible felt vibrations^[2][3]
Once completed, the Welcome Centre will add visitor tour capacity and expanded parliamentary business support^[2][3]

@BuildDesk

Cost C$5B

References 390% CONFIDENCE

The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.

[1]90%
youtube.com/watch?v=IxFcNOmND00
youtube.com· Posted Sep 14, 2026· Starts Jul 30, 2020 ✓· 100% of score
Happened as dated, per the source: "controlled explosives use and rock removal activities" began in front of Centre Block on Parliament Hill on July 30, 2020.
[2]95%
Start of controlled explosives use and rock removal activities on Parliament Hill — PSPC
canada.ca· Published Jul 30, 2020· 0% of score
The Canadian government's own release states controlled explosives and rock removal "will begin tomorrow" (dated 29 July 2020, work starting 30 July 2020), an exact match to the pin's stored date as the authoritative source.^[1]
[3]82%
Blasting starts at Ottawa's Centre Block — Daily Commercial News
canada.constructconnect.com· Published Jul 30, 2020· 0% of score
ConstructConnect corroborates that blasting "began on July 30, 2020" at Ottawa's Centre Block, an exact match to the pin's stored date.

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Something missing or wrong? Say it in your own words: a link that backs this pin up, a different start or end date and why, or a fact it lacks or gets wrong. The AI checks it against this pin's sources, searches for better ones, and adds any page that backs you up. The pin's own sources still count most.

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1Parliament Hill's Centre Block excavation begins

Architecture09/20/2026@BuildDesk
Kartavya Bhavan 1 and 2 Open in Delhi's New Central Secretariat
Kartavya Path, New Delhi, IndiaCentral Public Works Department
Starts 02/13/2026CONFIRMED 90% CONFIDENCE222 days agoThe article states "Kartavya Bhavan 1 and 2, along with Seva Teerth were inaugurated on 13 February 2026."^[1]
Two more of the ten Common Central Secretariat blocks on Kartavya Path, along with the Seva Teerth complex, were inaugurated, taking to three the number of buildings in service in the Central Vista's replacement for Shastri, Nirman and Krishi Bhawan. The first three blocks, designed by HCP and built by Shapoorji Pallonji, cost 3,690 crore rupees and each spans about 150,000 sq m over seven floors and two basements.
0.66
Architecture09/14/2026@BuildDesk
Palace of Westminster Restoration Phase One
Palace of Westminster, London, United Kingdom
Starts 12/31/2032ESTIMATED 68% CONFIDENCEin 6.3 yearsA target, per the source^[1]: the preliminary phase is recommended to run "to 2032", pending a final delivery decision by 2030.
A £3BN, seven-year preliminary phase to repair the crumbling Palace of Westminster, before Parliament chooses between fully vacating the building or working around it.
£3B
0.63
Transport09/15/2026@BuildDesk
Construction Begins on New York's Hudson River Rail Tunnel
North River Tunnel, Weehawken, New Jersey
Starts 11/03/2023CONFIRMED 89% CONFIDENCE2.9 years agoHappened as dated, per the source^[1]: "construction finally began Nov. 3 on the Hudson River Tunnel portion of the Gateway Program^[2]".
Crews broke ground on the Hudson Tunnel Project, a new rail tunnel meant to relieve the century-old, storm-damaged North River Tunnel beneath the Hudson River.
0.61
Transport09/15/2026@BuildDesk
Silvertown Tunnel Opens Under the Thames
Silvertown, London Borough of Newham, London, United KingdomTransport for London
Starts 04/07/2025CONFIRMED 90% CONFIDENCE1.5 years agoHappened as dated, per the source^[1]: "The Silvertown Tunnel will open on 7 April 2025, as confirmed by TfL^[2]."
Transport for London opened the Silvertown Tunnel, a new road crossing under the Thames built to relieve the perennially congested Blackwall Tunnel a few hundred metres away.
$2.8B
0.60
Architecture09/15/2026@BuildDesk
The Washington Monument Opens to the Public
Washington Monument, Washington, D.C., United StatesUnited States Army Corps of Engineers
Starts 10/09/1888CONFIRMED 84% CONFIDENCE138.0 years agoHappened as dated, per the source^[1]: "opened to the public in Washington, D.C., on this day in history, Oct. 9, 1888".
After decades of stalled funding and a visible change in stone partway up its shaft, the Washington Monument finally opened its doors to visitors in 1888.
0.60
Automotive09/15/2026@BuildDesk
Ford Starts the First Moving Assembly Line for a Complete Automobile
Highland Park Ford Plant, Highland Park, Michigan, USAFord…
Starts 12/01/1913CONFIRMED 87% CONFIDENCE112.8 years agoConfirmed per History.com^[3]'s "Ford's^[2] assembly line starts rolling" entry, which dates the first complete-automobile moving assembly line to December 1, 1913 at Ford's Highland Park plant.
On December 1, 1913, Ford Motor Company extended its moving line at the Highland Park plant to assemble a complete Model T chassis start to finish, cutting build time from over 12 hours to about 93 minutes.
0.60
Transport09/14/2026@BuildDesk
All 41 Workers Freed After Silkyara Tunnel Collapse
Silkyara, Uttarkashi, Uttarakhand, India
Starts 11/28/2023CONFIRMED 89% CONFIDENCE2.8 years agoHappened as dated, per the source^[1]: "the rescue team finally managed to break through the 60-meter blockage and free all the 41 workers."
Rescuers freed all 41 workers trapped for 17 days after a Himalayan highway tunnel collapsed in Uttarakhand, India, in one of the largest tunnel rescue operations on record.
0.59
Transport09/15/2026@BuildDesk
Sir William Arrol & Co.’s Forth Bridge Opens as the World’s Longest Cantilever Span
Firth of Forth, South Queensferry, Scotland, United KingdomSir William Arrol & Co.
Starts 03/04/1890CONFIRMED 87% CONFIDENCE136.6 years agoNetwork Rail^[3] confirms the Prince of Wales formally opened the Forth Bridge on 4 March 1890.
The Forth Bridge, a railway cantilever spanning the Firth of Forth in Scotland, was formally opened by the Prince of Wales on 4 March 1890, some months after the structure itself was finished in November 1889. Designed by John Fowler and Benjamin Baker and built by Sir William Arrol & Co., it was Britain's first major all-steel structure and the world's longest cantilever bridge span.
0.59
Transport09/15/2026@BuildDesk
Hong Kong Opens the Sha Tin to Central Link's Cross-Harbour Extension
Exhibition Centre Station, Wan Chai North, Hong KongMTR Corporation
Starts 05/15/2022CONFIRMED 90% CONFIDENCE4.4 years agoHappened as dated, per the source^[1]: the cross-harbour section was set to "fully open on May 15," reported days ahead of the 2022 launch.
Hong Kong's MTR opened the cross-harbour section of the Sha Tin to Central Link, an immersed-tube rail tunnel under Victoria Harbour that gave Hong Kong Island a fourth rail link to Kowloon.
$11.6B
0.59
Infrastructure09/14/2026@BuildDesk
Jakarta Sets September 2026 Groundbreaking for Its Giant Sea Wall
Jakarta Bay, Jakarta, Indonesia
Starts 09/30/2026ESTIMATED 70% CONFIDENCEin 7 daysEstimated: the January target was September 2026, but on 3 September 2026 CNN Indonesia^[2] reported Governor Pramono is "menunggu arahan dari pemerintah pusat" (awaiting the central government's direction) rather than confirming it, and on 20 August he said "Ini kan pemerintah pusat. Kita menunggu saja" when asked if it would go ahead in September.
Jakarta's government targeted September 2026 to break ground on its 19km stretch of a hybrid concrete-and-mangrove sea wall, part of a revised, roughly 500km national coastal defence plan that has replaced the earlier Garuda-shaped bird design.
0.59
Transport09/20/2026@BuildDesk
Delhi Metro's Golden Line Opens Its First Section, Tughlakabad to Sangam Vihar
Tughlakabad, New Delhi, IndiaDelhi Metro Rail Corporation
Starts 12/31/2026DELAYED2 years late61% CONFIDENCEin 99 daysConstruction World^[2], 16 September 2026, narrows the year to a month: DMRC is "targeting December 2026 for the opening of the first operational section of the Golden Line between Tughlaqabad and Sangam Vihar. The 8.4-km stretch is planned as the initial section". December is the last month of the year the pin already sat on, so the day stands at 31 December 2026 - now as the end of a named month rather than a bare year. The full Aerocity-Tughlakabad corridor follows later.
The first 8.4 km section of the Phase 4 Golden Line, from Tughlakabad to Sangam Vihar, is targeted to open in December 2026; the rest of the 29.785 km Delhi Aerocity-Tughlakabad corridor, 19 stations with 12 of them underground, follows in phases. By April 2026 civil work was 78 per cent done with five tunnel boring machines still at work, and trainsets had begun arriving at the modified Sarita Vihar depot.
0.59
Transport09/15/2026@BuildDesk
The Channel Tunnel Opens
Channel Tunnel, Folkestone, United Kingdom
Starts 05/06/1994CONFIRMED 78% CONFIDENCE32.4 years agoHappened as dated, per the source^[1]: the tunnel "was officially opened on May 6, 1994," presided over by Queen Elizabeth II and President Mitterrand.
The $15BN Channel Tunnel opened, linking Britain to mainland Europe by rail for the first time since the last Ice Age, after six years of construction under the English Channel.
$15B
0.59

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