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Mass General's Ragon Building Opens Its First Tower to Patients
DELAYED12 months late40% CONFIDENCEin 1.3 yearsMass General Brigham's[1] own page still describes "initial first side of the building opening in 2027", a year earlier than current reporting.The first of two connected towers in Mass General's Cambridge Street expansion takes its first patients, bringing 450 beds and 12 levels of operating, procedural and interventional space for the Corrigan Minehan Heart Center and the Mass General Cancer Center. Turner topped out the steel in February 2025; the second tower is not due until 2030.0.65The Astrodome Opens as the World's First Domed Stadium
NRG Astrodome, NRG Parkway, Houston, Texas
CONFIRMED87% CONFIDENCE61.5 years agoHappened as dated, per sabr.org[3]: "April 9, 1965: Astros beat Yankees in first game inside the Houston Astrodome."The Houston Astrodome, the world's first fixed-roof, air-conditioned multipurpose stadium, opened on 9 April 1965 with an exhibition game between the Astros and Yankees — though it's stood closed and searching for a new use since 2008.0.64Los Angeles Breaks Ground on Its Convention Center Expansion
CONFIRMED90% CONFIDENCE357 days agoThe report of the ceremony, published Wednesday, October 1, 2025, says "The city of Los Angeles broke ground Wednesday on a massive expansion of the L.A. Convention Center."[1]Work began on a 190,000-square-foot addition that joins the South and West exhibit halls into one contiguous hall of more than 750,000 square feet, plus new meeting and multipurpose space. Construction pauses in 2028 so the centre can host Olympic fencing, taekwondo, wrestling and table tennis, with final completion in 2029.$2.6B0.64Fort Worth Finishes the Second Phase of Its Convention Center
Fort Worth Convention Center, 1201 Houston Street, Fort Worth, TX 76102, United StatesCity of Fort Worth
ESTIMATED50% CONFIDENCEin 3.3 yearsVisit Fort Worth's[1] expansion page dates the "$606 million investment" second phase only to "Early 2030", a season rather than a day.Phase 2 tears down the convention center's 1968 arena and replaces it with a four-storey building and a new ballroom, finishing a rebuild whose first phase added 76,000 square feet and wrapped up in winter 2025. The centre stays open to events through the work.$606M0.63Circus West Village, Phase One of Battersea Power Station, Completes
Circus West Village, Battersea Power Station, Electric Boulevard, Nine Elms, London SW11 8DD, United Kingdom
ESTIMATED67% CONFIDENCE9.0 years agoEstimated: SimpsonHaugh's[2] project data gives completion as September 2017 (Buro Happold[3] gives only the year), and no day is published, so the month's last day stands in.Circus West Village, the first completed phase of London's Battersea Power Station regeneration designed by SimpsonHaugh and built by Carillion, wrapped up as the scheme's opening residential and retail quarter.0.63Cosm's LED Dome Opens as Centennial Yards' First Venue
CONFIRMED90% CONFIDENCE105 days agoCosm's[1] own construction update announced that the Atlanta venue "will debut for the public on June 10", and Atlanta News First reported from the opening that day.Cosm opened a 70,000-square-foot, three-level venue built around an 87-foot 12K LED dome in Atlanta's Gulch, showing Game 4 of the NBA Finals on its first night. It is the first attraction finished inside Centennial Yards, the $5 billion, 50-acre redevelopment of the rail gulch between State Farm Arena and Mercedes-Benz Stadium.0.62Harvard Opens the First Phase of Its Enterprise Research Campus
CONFIRMED90% CONFIDENCE92 days agoThe developers' release says they "were joined on June 23 by Mayor Michelle Wu" to celebrate the opening.[1]Harvard, Tishman Speyer and Breakthrough Properties cut the ribbon on the first phase of the Enterprise Research Campus in Allston: two commercial laboratory buildings called OneMilestone, the 343-apartment Verra, the Atlas Hotel, Harvard's David Rubenstein Treehouse conference centre, 40,000 square feet of retail and more than two acres of public open space. It is the opening move on a 36-acre site, with a Phase B of labs, offices and housing still to be permitted.0.62Foundation Work Begins on the Commanders' New Stadium at RFK
CONFIRMED90% CONFIDENCE175 days agoThe article states "Work on foundational infrastructure began in April 2026, with groundbreaking scheduled for early 2027", giving the month but not the day.[1]Work started on the foundational infrastructure for a 65,000-seat domed stadium on the old RFK Stadium site in southeast Washington, with the full groundbreaking held back to early 2027 and opening expected in 2030. The Commanders are putting up $2.7 billion towards a project projected at $3.8 billion; the District is spending $500 million on infrastructure and will own the building.0.62Star Brisbane Opens at Queen's Wharf
Queens Wharf Road, Brisbane City, Brisbane, Queensland, Australia
CONFIRMED90% CONFIDENCE2.1 years agoHappened as dated, per the source[1]: "The Star Grand Hotel, the new Star Brisbane casino... opened on 29 August 2024".The first phase of Queen's Wharf Brisbane, the AUD $3.6BN riverside district built around the historic Queen's Wharf site, opened to the public as Star Brisbane.A$3.6B0.62SoFi Stadium Opens in Inglewood With a Ribbon-Cutting
SoFi Stadium, 1001 Champion Drive, Inglewood, California, United States
CONFIRMED82% CONFIDENCE6.0 years agoHappened as dated, per the source[1]: "An official ribbon-cutting ceremony was hosted on September 8".The most expensive stadium ever built opened as the new home of the LA Rams and Chargers, with its first NFL game days later.$5.1B0.61Paris Métro Opens Its First Line
CONFIRMED85% CONFIDENCE126.2 years agoRATP's[3] own history page and EarthSky's[2] science-history article both give 19 July 1900 as the inauguration date of the first métro line.The Paris Métro's first line opened to the public on 19 July 1900, running between Porte Maillot and Château de Vincennes.0.60The First 412,000 Barrels Go Underground at West Hackberry
CONFIRMED90% CONFIDENCE49.2 years agoDOE's own 40th-anniversary piece gives the day: "On July 21, 1977, the SPR received its first oil delivery."[1]The Strategic Petroleum Reserve took its first delivery on 21 July 1977: about 412,000 barrels of Saudi Arabian light crude, pumped into salt caverns near Lake Charles, Louisiana. Construction had started that April, when the government bought up existing caverns along the Gulf Coast rather than wait to dig its own.0.60
