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.
Architecture trade press Archinect covers the rotating tower project as still an unbuilt, recurring proposal years after its original 2020 target, independently corroborating that it was never realized as planned.
Wikipedia confirms the Dynamic Tower (the 'rotating skyscraper' the pin describes) is a cancelled project: 13+ years after its 2008 proposal, construction never started and no site was ever confirmed, so it did not open by 2020 as the pin's source predicted. No real completion date exists to substitute.
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. A picture that shows something else, or shows it badly, is looked at too, and moved down or replaced.
