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.
Happened as dated, per the source: the tower, "constructed at an estimated cost of USD $16BN," was completed in 2012.
FD Engineering documentary on the Mecca Clock Tower’s construction, covering the same completed landmark as this pin.[1]
Wikipedia's infobox lists the tower as completed in 2011 with the complex "officially opened in 2012" at a cost of "US$15 billion," broadly matching the pin's stored end-of-2012 date, though its $15BN figure is slightly below the pin's stated $16BN.
The B1M's own video title, "Saudi Arabia Built a $16BN Clock Tower," matches the pin's stated cost figure exactly, though the domain could not be verified for direct fetch to confirm the specific completion date.
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.
