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.
Gardens by the Bay and multiple news sources give 29 June 2012 as the park's public opening date, with the Flower Dome later Guinness-certified in 2015.
Gardens by the Bay's own site describing the Flower Dome as the world's largest columnless glasshouse.[1]
Guinness World Records entry certifying the Flower Dome as the largest glass greenhouse.
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.
